cafeïne — etiket CAS 58-08-2

cafeïne

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Chemisch reagens Kofeina (CAS 58-08-2). Volledige encyclopedische kaart — classificatie, eigenschappen en veiligheidsgegevens — hieronder.

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MolGod_SDSCARD_1
REACH 2020/878
v8 · 23.07.2026
Kategoria:
🧬 3D-molecuulvisualisator
Molecuul laden...
3D-model Kofeina, CAS 58-08-2, molecuulformule C8H10N4O2, molaire massa 194.19 g/mol

Gegevens overgenomen uit regelgevende registers en vakliteratuur, met vermelding van bron en editie. Zij vervangen niet het veiligheidsinformatieblad van de leverancier. Velden zonder vastgelegde bron zijn als zodanig gemarkeerd.

Chemisch overzicht: KofeinaMolGod_OVERVIEW_1
MolecuulformuleC8H10N4O2[1]
Molecuulmassa194.19 g/mol[1]
Smeltpunt235 °C[1][2][3]
Dichtheid1.23 g/cm³[1][2][3]
LogP (lipofiliteit)-0.07[1][3]
pKa14[3]
IUPAC-naam1,3,7-trimethylpurine-2,6-dione[1]
SMILESCn1cnc2c1c(=O)n(c(=O)n2C)C[1]
InChIKeyRYYVLZVUVIJVGH-UHFFFAOYSA-N[1]

Synoniemen: Caffeine · 1,3,7-Trimethylxanthine · Guaranine

Gegevensbronnen: PubChem (NLM/NIH), Merck Index 15th ed. (2013)
Laatst bijgewerkt: 2026-08-05

📚 Wetenschappelijke referenties (Chicago Author-Date) (3 bronnen)
  1. PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. ↗ dotyczy: Molecuulformule · Molecuulmassa · Smeltpunt · Dichtheid · LogP (lipofiliteit) · IUPAC-naam · SMILES · InChIKey
  2. NLM. Hazardous Substances Data Bank (HSDB). National Library of Medicine. ↗ dotyczy: Smeltpunt · Dichtheid
  3. O'Neil, M.J., ed. The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals. 15th ed. Cambridge: Royal Society of Chemistry, 2013. dotyczy: Smeltpunt · Dichtheid · LogP (lipofiliteit) · pKa

🎓 Badania akademickie: Kofeina

#1🎓Faculty of Science and Humanities📅 2026
Calcium Carbonate-Stabilized Nano-Caffeine Emulsion Attenuates Diabetic Cardiomyopathy via Antioxidant, Anti-Inflammatory, and Anti-Fibrotic Pathways in Type 2 Diabetic Rats…
Mansouri RA; Aboubakr EM; Alshaibi HF; Fouda WM; Banjabi AA; Al-Bazi MM.
Volledig LAB-rapport →
#2🎓Faculty of Science and Stem Cell Institute📅 2026
Green synthesis of caffeine-catalyzed citric acid-PPG/PEG crosslinked alginate hydrogel scaffolds for prospective biomedical applications
Hategekimana F; Elçin AE; Elçin YM.
Volledig LAB-rapport →
#3🎓Faculty of Engineering and Technology (ITER)📅 2025
Thermo-acoustic investigation on mixtures of Tetramethyl ammonium hydroxide and caffeine in aqueous medium with the goal to understand…
Baral AK, Talukdar M, Singh S..
Volledig LAB-rapport →
#4🎓Federal University of Technology-Paraná📅 2025
Antibiofilm effect of caffeine against Listeria monocytogenes and Escherichia coli in grape and apple fruit juices
Dos Santos ARP; Lima BCS; Couto GJ; Carvalho L; Magna LR; Nogueira MH.
Volledig LAB-rapport →
#5🎓University of Kurdistan📅 2023
The ADORA2A TT Genotype Is Associated with Anti-Inflammatory Effects of Caffeine in Response to Resistance Exercise and Habitual…
Rahimi MR; Semenova EA; Larin AK; Kulemin NA; Generozov EV; Łubkowska B.
Volledig LAB-rapport →

WETENSCHAPPELIJK ONDERZOEK

[1]EuropePMC2026
Eugenol-Based Epoxy Vitrimers: Caffeine and Zinc Acetate as Potential Alternative Catalysts in Curing Kinetics and Dynamic Network Properties
Becerra-Lovera A, Anaya-Mancipe J, Díaz-Martin R, Dias M, Souza D.. 2026. "Eugenol-Based Epoxy Vitrimers: Caffeine and Zinc Acetate as Potential Alternative Catalysts in Curing Kinetics and Dynamic Ne
Ga naar het volledige onderzoek ↗
[2]PubMed2025
Yerba mate (Ilex paraguariensis) genome provides new insights into convergent evolution of caffeine biosynthesis
Vignale FA; Hernandez Garcia A; Modenutti CP; Sosa EJ; Defelipe LA; Oliveira R. 2025. "Yerba mate (Ilex paraguariensis) genome provides new insights into convergent evolution of caffeine biosynthesis.
European Molecular Biology Laboratory - Hamburg Unit
Ga naar het volledige onderzoek ↗
[3]PubMed2024
Elevated neutrophils and uncontrolled asthma: the effects of caffeine, diet and co-morbidities
Tan BJ; Xiao B; Tan EK. 2024. "Elevated neutrophils and uncontrolled asthma: the effects of caffeine, diet and co-morbidities." The Journal of asthma : official journal of the Association for the Care
Singapore General Hospital Campus
Ga naar het volledige onderzoek ↗
[4]PubMed2024
Analytical insight into caffeine extraction from typica coffee leaves based on crystallinity enhancement, optical phonon vibration upshift, and…
Latunra AI; Heryanto H; Tahir D; Ardiansa A. 2024. "Analytical insight into caffeine extraction from typica coffee leaves based on crystallinity enhancement, optical phonon vibration upshift, and morp
Hasanuddin University
Ga naar het volledige onderzoek ↗
[5]EuropePMC2024
How Does the Powder Mixture of Ibuprofen and Caffeine Attenuate the Solubility of Ibuprofen? Comparative Study for the…
Suenaga S, Kataoka H, Hasegawa K, Koga R, Tsunoda C, Kuwashima W, Tsuchida T, Goto S.. 2024. "How Does the Powder Mixture of Ibuprofen and Caffeine Attenuate the Solubility of Ibuprofen? Comparative S
Ga naar het volledige onderzoek ↗
📊 Fysisch-chemische eigenschappen

Snel overzicht

Formule: C8H10N4O2
MW: 194.19 g/mol
CAS: 58-08-2
Uiterlijk: Witte, prismatische kristallen
Geur: Geurloos

Gedetailleerde eigenschappen

Uzupełnienie tabeli „Właściwości fizykochemiczne (baza danych)” poniżej — powtórzone wartości pokazujemy tylko raz.

Eigenschap Waarde Eenheid Condities Bron
Kookpunt (bp) 177.8 °C at 760 mmHg (sublimes) (NTP, 1992) CAMEO Chemicals ↗
Dampdruk 0.00000001 [mmHg][1] Haz-Map, Information on Hazardous Chemicals and Occupational Diseases ↗
🔬 Geavanceerde eigenschappen

Chemische identificatoren

SMILES: Cn1cnc2c1c(=O)n(c(=O)n2C)C
InChI: InChI=1S/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(14)11(6)2/h4H,1-3H3
InChIKey: RYYVLZVUVIJVGH-UHFFFAOYSA-N

Gegevensbronnen: CAMEO Chemicals, Haz-Map, Information on Hazardous Chemicals and Occupational Diseases

Laatst bijgewerkt: 2026-06-30

📚 Wetenschappelijke referenties (Chicago Author-Date) (1 bronnen)
  1. PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. ↗ dotyczy: Dampdruk
Regelgevingsstatus van de stof
Deze stof is onderworpen aan reglementaire vereisten: beheer van gevaarlijke afvalstoffen (BDO-register). Details in de sectie "Regelgevingsstatus (REACH/ECHA/CLP)" en op de SDS. Regelgevingsinformatie — beperkt de aankoop in deze winkel niet.
🧮 StoichiometrierekenmachineMolGod_STOICH_1
🔍 Externe identificatorenMolGod_EXTID_1
15 van 16 ID-systemen94%
DatabaseIdentificatorActies
CAS Registry Number58-08-2Openen →
PubChem CID2519[1]Openen →
InChIKeyRYYVLZVUVIJVGH-UHFFFAOYSA-N[1]Openen →
InChIInChI=1S/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(…[1]
SMILESCn1cnc2c1c(=O)n(c(=O)n2C)C[1]
EC Number200-362-1[2]Openen →
DrugBankDB00201Openen →
KEGG CompoundD00528Openen →
HMDBHMDB0001847Openen →
ChemSpider2424[3]Openen →
CompTox DTXSID (EPA)DTXSID0020232[4]Openen →
MeSH UID (NLM)D002110Openen →
UNII (FDA)3G6A5W338EOpenen →
NSC Number (NCI)5036Openen →
WikiData QIDQ60235Openen →

Bronnen: PubChem (NIH), Wikidata SPARQL, KEGG, ChEMBL (EBI), CompTox CTX (EPA).

📚 Wetenschappelijke referenties (Chicago Author-Date) (4 bronnen)
  1. PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. ↗ dotyczy: PubChem CID · InChIKey · InChI · SMILES
  2. ECHA. EC Inventory — EINECS, ELINCS, NLP and List Numbers assigned under REACH. Helsinki: European Chemicals Agency. ↗ dotyczy: EC Number
  3. ChemSpider. Royal Society of Chemistry, chemical structure database. ↗ dotyczy: ChemSpider
  4. U.S. EPA. CompTox Chemicals Dashboard — ToxCast/Tox21 high-throughput screening bioactivity summary (testing coverage, not a hazard finding). Washington, DC: U.S. Environmental Protection Agency. ↗ dotyczy: CompTox DTXSID (EPA)
📡 Spectroscopie — CAS 58-08-2MolGod_SPECHUB_MAIN
📊 Spectra (NMR, IR, MS, UV-Vis) (1)

Beschikbare spectrumtypen: IR

IR-spectrum (KBr, 4000-400 cm⁻¹)

440 datapunten · Bron: NIST WebBook · NIST ↗ · 📥 JCAMP-DX
🎓 Gids voor spectruminterpretatie (voor studenten)
Hoe lees je een IR-spectrum
  • 3200-3600 cm⁻¹ — O-H-rekvibratie (brede piek = waterstofbrug)
  • 2850-3000 cm⁻¹ — C-H-rekvibratie (sp³)
  • 1650-1750 cm⁻¹ — C=O-rekvibratie (ketonen, aldehyden, esters)
  • 1400-1600 cm⁻¹ — trillingen van de aromatische ring
  • 1000-1300 cm⁻¹ — C-O-rekvibratie (ethers, alcoholen)
  • Geen absorptie = geen functionele groep → vergelijk met een referentie

Bronnen: LibreTexts ↗, Silverstein (Spectrometric ID) ↗

📚 Wetenschappelijke referenties (Chicago Author-Date) (7 bronnen)
  1. National Institute of Standards and Technology. 2024. "NIST Chemistry WebBook, SRD 69." Gaithersburg, MD: NIST. Accessed 2025-01-01. ↗
  2. Spectral Database for Organic Structure Determination (SDBS). 2024. National Institute of Advanced Industrial Science and Technology (AIST), Japan. Accessed 2025-01-01. ↗
  3. Ulrich, Eldon L., Hideo Akutsu, John F. Doreleijers, Yoko Harano, Yannis E. Ioannidis, Jundong Lin, Miron Livny, et al. 2008. "BioMagResBank." Nucleic Acids Research 36 (D1): D402–D408. [DOI ↗]
  4. Horai, Hisayuki, Masanori Arita, Shigehiko Kanaya, Yoshito Nihei, Tasuku Ikeda, Kazuhiro Suwa, Yuya Ojima, et al. 2010. "MassBank: A Public Repository for Sharing Mass Spectral Data for Life Sciences." Journal of Mass Spectrometry 45 (7): 703–714. [DOI ↗]
  5. Linstrom, P.J., and W.G. Mallard, eds. 2024. NIST Chemistry WebBook, NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology. ↗
  6. McDonald, M. Shane, Mike McAvoy, and Ajit Bhalerao. 1988. "JCAMP-DX: A Standard Form for Exchange of Infrared Spectra in Computer Readable Form." Applied Spectroscopy 42 (1): 151–162. [DOI ↗]
  7. PubChem. 2024. "PubChem Compound Database." National Library of Medicine, National Institutes of Health. Accessed 2025-01-01. ↗
📐 Fysisch-chemische eigenschappen (database) 11 velden MolGod-score: Primair
Eigenschap Waarde Eenheid Conditions Source
Smeltpunt 235 [1][2][3] °C decomp. Merck Index 15th ed. (2013)
Kookpunt rozkłada się [1] — przed wrzeniem (decomp.) Merck Index 15th ed. (2013)
Wateroplosbaarheid 21.7 [1][4] g/L 25°C Merck Index 15th ed. (2013)
Dichtheid (ρ) 1.23 [1][2][3] g/cm³ 20°C Merck Index 15th ed. (2013)
UV λmax 273 [1] nm water Merck Index 15th ed. (2013)
UV εmax 9700 [1] M⁻¹·cm⁻¹ at λmax Merck Index 15th ed. (2013)
pKa₁ 14 [1] — Merck Index 15th ed. (2013)
pKa₂ -0.12 [1] — Merck Index 15th ed. (2013)
logP (octanol/water) -0.07 [1][2] — Merck Index 15th ed. (2013)
logD (pH 7) -0.07 [1] — pH 7 Merck Index 15th ed. (2013)
Soortelijke warmte (cp) 1.49 [1] J/(g·K) Merck Index 15th ed. (2013)
📚 Wetenschappelijke referenties (Chicago Author-Date) (4 bronnen)
  1. O'Neil, M.J., ed. The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals. 15th ed. Cambridge: Royal Society of Chemistry, 2013. dotyczy: Smeltpunt · Kookpunt · Wateroplosbaarheid · Dichtheid (ρ) · UV λmax · UV εmax · pKa₁ · pKa₂ · logP (octanol/water) · logD (pH 7) · Soortelijke warmte (cp)
  2. NLM. Hazardous Substances Data Bank (HSDB). National Library of Medicine. ↗ dotyczy: Smeltpunt · Dichtheid (ρ) · logP (octanol/water)
  3. PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. ↗ dotyczy: Smeltpunt · Dichtheid (ρ)
  4. ECHA. European Chemicals Agency — harmonised classification inventory (CLP Annex VI). ↗ dotyczy: Wateroplosbaarheid

De fysisch-chemische waarden zijn afkomstig van de onafhankelijke, peer-reviewed bronnen die hierboven zijn vermeld.

🔄 Omrekenaar voor concentratie-eenheden LIVE MolGod_UNITCONV_1

Voer de concentratie Kofeina in een willekeurige eenheid in — de rest wordt automatisch berekend.

MW: 194.19 g/mol · IUPAC Gold Book ↗

⚗️ Conversieformules + citaten (per formule)
ConversieFormuleNauwkeurigheidBron
% (w/v) ↔ molarityc (mol/L) = (% × 10) / MW±0.5% rel. when density ≈ 1.0 g/mLIUPAC (2019)
millimolar ↔ molarc (mol/L) = mM × 10⁻³ExactCohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
molarity (mol/L)c = n/V = (m/MW)/V±0.1% (depends on MW precision)IUPAC (2019)
parts per million (mg/L) ↔ molarityc (mol/L) = ppm / (1000 × MW); equivalently ppm = mg/L for dilute aqueous±1% (density-independent for dilute solutions)IUPAC (2019)
mg/mL ↔ molarityc (mol/L) = (mg/mL × 1000) / MW / 1000 = mg/mL / MW × 1±0.2%Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
g/L ↔ molarityc (mol/L) = (g/L) / MW±0.1% (depends on MW precision)Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
mmol/L ↔ molarityc (mol/L) = mmol/L × 10⁻³ExactCohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
Celsius ↔ KelvinT(K) = t(°C) + 273.15±0.01 K (ITS-90 scale)BIPM (Bureau International des Poids et Mesures) (2019)
Celsius ↔ FahrenheitT(°F) = T(°C) × 9/5 + 32±0.1 °FThompson A, Taylor BN (2008)
density-corrected % ↔ molarityc (mol/L) = (%w/w × ρ × 10) / MW, ρ in g/mL±0.1% when ρ known to 3 decimalsCohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
📚 Bibliografie (8 gezaghebbende bronnen)
  1. Thompson A, Taylor BN (2008). Guide for the Use of the International System of Units (SI). NIST Special Publication 811 · DOI: 10.6028/NIST.SP.811-2008
    → Primary SI standard for US scientific usage
  2. Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007). Quantities, Units and Symbols in Physical Chemistry — The IUPAC Green Book. RSC Publishing, 3rd ed. · DOI: 10.1039/9781847557889 · ISBN: 978-0-85404-433-7
    → Canonical IUPAC guide for chemistry quantities/units
  3. BIPM (Bureau International des Poids et Mesures) (2019). The International System of Units (SI), 9th edition. BIPM · ↗
    → International SI definitions (incl. redefined kilogram 2019)
  4. ISO/IEC (2022). Quantities and units — Part 1: General. International Organization for Standardization — ISO 80000-1:2022 · ↗
    → General rules for physical quantities and units
  5. ISO/IEC (2019). Quantities and units — Part 9: Physical chemistry and molecular physics. International Organization for Standardization — ISO 80000-9:2019 · ↗
    → Concentration / molality / amount-of-substance conventions
  6. Tiesinga E, Mohr PJ, Newell DB, Taylor BN (2021). CODATA recommended values of the fundamental physical constants: 2018. Rev. Mod. Phys. 93(2):025010 · DOI: 10.1103/RevModPhys.93.025010
    → Avogadro, gas constant, molar volume (2019 SI revision)
  7. IUPAC (2019). Compendium of Chemical Terminology — the IUPAC Gold Book (online). IUPAC · DOI: 10.1351/goldbook
    → Definitions of mass fraction, molality, normality, ppm, activity
  8. Mills IM, Cvitaš T, Homann K, Kallay N, Kuchitsu K (1988). Quantities, Units and Symbols in Physical Chemistry. Blackwell Scientific Publications, 1st ed. · ISBN: 0-632-01773-5
    → Historical predecessor of IUPAC Green Book
🧪 Wizard voor het bereiden van oplossingen WIZARD MolGod_PREP_1
① Selecteer concentratie
② Doelvolume
③ Oplosmiddel

Berekeningen volgens: IUPAC Gold Book ↗, Merck ↗

🔬 Gids voor zuiverheidscontrole Kwaliteitscontrole

Verifieer de zuiverheid van het reagens met gestandaardiseerde analytische methoden. Selecteer hieronder een testmethode en voer uw meetresultaten in voor automatische berekening.

🛡️ Veiligheid — CAS 58-08-2MolGod_SAFEHUB_MAIN
Mededeling over gegevensbeperkingen. De veiligheidsinformatie op deze pagina is uitsluitend ter informatie en vervangt geen volledig veiligheidsinformatieblad (SDS). Raadpleeg vóór gebruik van het product het actuele veiligheidsinformatieblad van de fabrikant en de GHS/CLP-richtlijnen. De CLP-indeling geldt voor de zuivere bulkstof, niet voor commerciële formuleringen.

GHS/CLP-indeling — Verordening (EG) nr. 1272/2008 + UN GHS Rev. 9 (2021).

⚠ Waarschuwing (Warning)
GHS07 — Irriterend / schadelijk
GHS07 Irriterend / schadelijk

🚨 Gevarenaanduidingen (H)

  • H302 — Schadelijk bij inslikken.

🛡 Voorzorgsmaatregelen (P)

  • P264 — Na het werken met dit product … grondig wassen.
  • P270 — Niet eten, drinken of roken tijdens het gebruik van dit product.
  • P301+P312 — NA INSLIKKEN: Bij onwel voelen een ANTIGIFCENTRUM/arts/… raadplegen.
  • P330 — De mond spoelen.
  • P501 — Inhoud/verpakking afvoeren naar …

✓ Geharmoniseerde indeling overeenkomstig bijlage VI bij de CLP-verordening (EG) 1272/2008 (officiële, bindende indeling). Indexnummer: 613-086-00-5.

Referentie (Chicago): European Chemicals Agency. "caffeine, Index No. 613-086-00-5." In Table 3 of Annex VI to Regulation (EC) No 1272/2008 (CLP Regulation), 23rd Adaptation to Technical Progress (harmonised list as of 2026-07-07). Helsinki: European Chemicals Agency, 2026. https://echa.europa.eu/information-on-chemicals/annex-vi-to-clp.

⚠ IARC — Groep 3: niet in te delen wat betreft kankerverwekkendheid voor de mens (beoordeeld door IARC). (Onafhankelijke beoordeling van het bewijs voor kankerverwekkendheid door IARC/WHO — vult de bovenstaande CLP-indeling aan.)
Referentie (Chicago): IARC. n.d. IARC Monographs on the Identification of Carcinogenic Hazards to Humans: CAS 58-08-2. Lyon, France: International Agency for Research on Cancer, World Health Organization. https://monographs.iarc.who.int/list-of-classifications/.

Vertalingen: CLP-verordening (EG) 1272/2008, Bijlage III en IV. Gegevens: PubChem/NLM.

📚 Geconsolideerde wetenschappelijke referenties — Chicago Author-Date 10 bronnen

Referenties verzameld uit alle tabbladen van de Safety Hub. CAS: 58-08-2 · PubChem ↗

  1. Parlament Europejski i Rada UE. 2008. "Rozporządzenie (WE) nr 1272/2008 w sprawie klasyfikacji, oznakowania i pakowania substancji (CLP)." Dz.Urz. UE L 353. [↗] GHS, Regelgeving
  2. United Nations Economic Commission for Europe (UNECE). 2021. "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), Ninth Revised Edition." United Nations, Geneva. [↗] GHS
  3. Goldfrank, Lewis R., Robert S. Hoffman, Mary Ann Howland, et al.. 2019. "Goldfrank's Toxicologic Emergencies, 11th ed.." McGraw-Hill Education, New York. ISBN 978-1-25-985961-8. Pierwsza pomoc, Toksykologia
  4. National Institute for Occupational Safety and Health (NIOSH). 2023. "NIOSH Pocket Guide to Chemical Hazards (DHHS Publ. 2005-149)." U.S. Department of Health and Human Services / CDC, Cincinnati, OH. [↗] Pierwsza pomoc, PPE, Toksykologia
  5. European Committee for Standardization (CEN). 2016. "EN 374-1:2016 — Protective gloves against dangerous chemicals and micro-organisms." CEN, Brussels. [↗] PPE
  6. UNECE. 2023. "European Agreement Concerning the International Carriage of Dangerous Goods by Road (ADR 2025)." United Nations, Geneva. [↗] Utylizacja, Regulacje
  7. National Fire Protection Association (NFPA). 2022. "NFPA 400 — Hazardous Materials Code." NFPA, Quincy, MA. [↗] Magazynowanie
  8. Urben, P.G. (ed.). 2017. "Bretherick's Handbook of Reactive Chemical Hazards, 8th ed.." Butterworth-Heinemann / Elsevier, Oxford. [↗] Magazynowanie
  9. Ministerstwo Klimatu i Środowiska RP. 2023. "Baza danych o produktach i opakowaniach oraz o gospodarce odpadami (BDO)." Ministerstwo Klimatu i Środowiska, Warszawa. [↗] Utylizacja
  10. International Agency for Research on Cancer (IARC / WHO). 2024. "IARC Monographs on the Identification of Carcinogenic Hazards to Humans — List of Classifications." WHO, Lyon. [↗] Toksykologia

Tabbladen met eigen referenties (Emergency, PPE, Storage, Waste) bevatten aanvullende bibliografische vermeldingen binnen hun respectieve secties.

📈 Analytische statistiek (t-test · RSD · Grubbs · Q-Dixon) ICH Q2

Plak een reeks herhaalde metingen (CSV of één getal per regel). De calculator berekent het gemiddelde, de standaardafwijking en 95% CI, en detecteert uitschieters (Grubbs + Dixon Q).

Scheidingsteken: komma, spatie, tab, nieuwe regel. Minimaal 3 metingen.
📐 Statistische formules
  • x̄ = Σxᵢ / n — rekenkundig gemiddelde
  • s² = Σ(xᵢ - x̄)² / (n-1) — steekproefvariantie
  • s = √s² — standaardafwijking
  • RSD% = (s / x̄) × 100% — relatieve standaardafwijking
  • CI₉₅ = x̄ ± t(0.05, n-1) × s / √n — Student's t
  • G = |xᵢ - x̄| / s — Grubbs-test
  • Q = |xsuspect - xnearest| / |xmax - xmin| — Dixon Q-test

Bron: ICH Q2(R2) Validation of Analytical Procedures · ICH PDF ↗

🧪 Bufferrecept-calculator UNIEK
Literatuur: pKa-waarden uit Goldberg NIST 81 · CRC Handbook 100th ed. · Stoll & Blanchard 1990 (DOI)

Kies een buffer uit de lijst van 20 populaire systemen → voer de streef-pH in → ontvang een exact recept met de af te wegen massa's.

Stap 1: Kies een buffersysteem

📜 Receptgeschiedenis (laatste 10)
🚚 Transportclassificatie (ADR / IATA / IMDG)
✅ Niet onderworpen aan transportvoorschriften

Stof geclassificeerd als niet-gevaarlijk voor het wegvervoer (ADR), luchtvervoer (IATA) en zeevervoer (IMDG).

Bron: ADR 2025 (Not regulated)

🛣️ ADR Wegvervoer

Klasse:
Not regulated

Bronnen: ADR 2025 ↗ · IATA DGR ↗ · IMDG Code ↗

📊 Validatie van de HPLC-methode (ICH Q2(R1)) PARTIAL

3 of 3 critical metrics need experimental data

Parameter Waarde Eenheid ICH Q2-criterium Status
Lineariteit (R²) geen gegevens unitless R² ≥ 0.999 (≥0.99 voor bioanalytische methoden) —
LOD (S/N = 3:1) geen gegevens ng/mL S/N ≥ 3:1 (laagste detecteerbare concentratie) —
LOQ (S/N = 10:1) geen gegevens ng/mL S/N ≥ 10:1 (LOQ ≥ 3×LOD doorgaans) —
Precisie (RSD intraday, n=6) geen gegevens % RSD RSD ≤ 2% (intraday) / ≤ 3% (interday) voor de API —
Juistheid (recovery, 3 niveaus) geen gegevens % (target 100±2%) Recovery 98-102% (target 100%) —
Lineariteitsbereik geen gegevens bijv. 0.1-100 ng/mL Min. 80-120% van de nominale concentratie —
Selectiviteit/Specificiteit geen gegevens qualitative Geen interferentie — analytpiek volledig gescheiden (Rs ≥ 2.0) —
Robuustheid (robustness) geen gegevens RSD < 2% bij ±5% variatie RSD < 2% bij kleine parametervariaties —
Legend: ✓ PASS ⚠ CAUTION ✗ FAIL — NO_DATA
📚 Wetenschappelijke referenties (Chicago Author-Date) — klik om uit te klappen

Standaarden voor validatie van analytische methoden — 4 onafhankelijke bronnen (ICH + USP + AOAC + Snyder).

  1. International Conference on Harmonisation (ICH). 2005. Validation of Analytical Procedures: Text and Methodology Q2(R1). ICH Expert Working Group. [link ↗] — Gold-standard ICH guideline — accepted by EMA, FDA, MHLW, NMPA
  2. United States Pharmacopeia (USP) Convention. 2024. USP General Chapter <621> Chromatography. USP-NF 2024 ed. USP. [link ↗]
  3. AOAC International. 2016. Appendix F: Guidelines for Standard Method Performance Requirements. AOAC INTERNATIONAL. [link ↗] — AOAC SMPR — alternative to ICH Q2 for food/dietary supplements
  4. Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. John Wiley & Sons. ISBN 978-0-470-16754-0. https://doi.org/10.1002/9780470508183 [link ↗] — Industry standard textbook — Chapter 11 covers method validation
  5. Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. Practical HPLC Method Development. 2nd ed. Wiley. ISBN 978-0-471-00703-6. — Classic method-development reference (DryLab heritage).
  6. Rozet, Eric, et al.. 2013. Analysis of recent pharmaceutical regulatory documents on analytical method validation. https://doi.org/10.1016/j.chroma.2007.03.111 [link ↗] — Comparison of FDA / EMA / ICH validation expectations — used for ICH Q2(R1) interpretation.
  7. Heyden, Yvan Vander, et al.. 2009. Robustness of pharmaceutical liquid chromatographic methods. https://doi.org/10.1016/j.jchromb.2008.10.052 [link ↗] — Plackett-Burman design for robustness — basis of ICH Q2 §3.7.
  8. Dong, Michael W.. 2019. HPLC and UHPLC for Practicing Scientists. 2nd ed. Wiley. ISBN 978-1-119-31378-3. https://doi.org/10.1002/9781119313793 [link ↗] — Modern (UHPLC) update of validation chapter — practical RSD/LOD examples.
  9. Meyer, Veronika R.. 2010. Practical High-Performance Liquid Chromatography. 5th ed. Wiley. ISBN 978-0-470-68218-0. — European pharmacopeial perspective — complements USP/AOAC.
  10. Kazakevich, Yuri V., and Rosario LoBrutto, eds.. 2007. HPLC for Pharmaceutical Scientists. Wiley-Interscience. ISBN 978-0-471-68162-4. https://doi.org/10.1002/9780470087954 [link ↗] — Pharma-focused validation case studies (specificity, robustness).
  11. European Medicines Agency (EMA). 2011. Guideline on bioanalytical method validation EMEA/CHMP/EWP/192217/2009. EMA Committee for Medicinal Products for Human Use. [link ↗] — EMA bioanalytical companion to ICH Q2(R1) for clinical samples.

· ⚠ Regelgevende waarschuwingen SVHC/REACH ↑

🔧 HPLC-troubleshooting — beslissingsboom 6 veelvoorkomende problemen

Diagnostiek van de 6 meest voorkomende HPLC-problemen met een beslissingsboom (5 stappen per probleem). Bron: Snyder/Kirkland/Dolan 3rd ed. Chapter 17 + LCGC LC Troubleshooting columns 1989-2024.

Verbrede pieken (broad peaks) medium

Symptoom: Alle pieken op het chromatogram zijn breder dan verwacht (FWHM > 2× normaal)

🔍 Diagnostische boom:
  1. 1. Controleer of alle pieken verbreed zijn of slechts sommige
    → JA: Alle → instrumenteel probleem (kolom of systeem)
    → NEE: Slechts sommige → chemisch probleem (interactie met de kolom voor specifieke analyten)
  2. 2. Verwissel met een testkolom — verdwijnt het probleem?
    → JA: KOLOM versleten — packing beschadigd, void in de eerste mm. Vervang hem.
    → NEE: Probleem in het LC-systeem
  3. 3. Controleer het dode volume (dead volume) — injectielus, verbindingen, detector
    → JA: Lus > 100 µL voor een 4.6 mm kolom of losse verbindingen → vervang de ferrules, kort de leidingen in
    → NEE: Diagnostiek voortzetten
  4. 4. Temperatuurtest: verhoog de kolom van 25°C naar 40°C
    → JA: Smallere pieken → massatransferkinetiek te traag (verhoog T)
    → NEE: Continue
  5. 5. Controleer het debiet t.o.v. het van Deemter-optimum voor deze kolom
    → JA: Optimum voor 4.6mm/5µm = 1.0 mL/min, voor 2.1mm/3µm = 0.4 mL/min
    → NEE: Continue
⚠️ Typische oorzaken:
  • Kolom versleten (>2000 injecties zonder voorkolom)
  • Dood volume van het systeem > 100 µL (verkeerde lus, lange leidingen, losse ferrules)
  • Temperatuur te laag (massatransferkinetiek)
  • Debiet buiten het van Deemter-optimum
  • Monsteroplosmiddel sterker dan mobiele fase A
✓ Oplossingen:
  • ✓ Vervang de kolom (bij >2000 injecties)
  • ✓ Controleer alle verbindingen — houd de leidingen zo kort mogelijk
  • ✓ Verhoog de kolomtemperatuur naar 40°C (als de stof stabiel is)
  • ✓ Verlaag het debiet naar het van Deemter-optimum
  • ✓ Los het monster op in mobiele fase A (niet in puur organisch)
Piektailing (tailing, T > 1.5) high

Symptoom: Pieken hebben een verlengde "staart" aan de late-elutiezijde (asymmetrie T = b/a > 1.5 volgens USP)

🔍 Diagnostische boom:
  1. 1. Bevat de stof basische groepen (amino, pyridine)?
    → JA: Ja → silanolinteracties! Voeg 0.1% TFA of 5-10 mM TEA toe aan mobiele fase A.
    → NEE: Continue
  2. 2. Controleer de pH van de mobiele fase t.o.v. de pKa van de stof
    → JA: pH = pKa ± 1 → gedeeltelijke ionisatie, peak split. Verplaats de pH ≥ 2 eenheden weg van de pKa.
    → NEE: Continue
  3. 3. Controleer de leeftijd van de kolom (>1500 injecties?)
    → JA: Ja → blootgelegde silanolen (column bleed). Vervang door een kolom met hogere endcapping (XTerra, Symmetry).
    → NEE: Continue
  4. 4. Bevat het monster metalen (Fe, Cu uit glazen flesjes)?
    → JA: Ja → gebruik kleurloze type II-flesjes of PFA. Voeg 0.1mM EDTA toe aan het monster.
    → NEE: Continue
⚠️ Typische oorzaken:
  • Silanolinteracties (basische analyt + vrije silanolen van silicagel)
  • pH op de grens van de pKa van de analyt (peak split)
  • Oude kolom (column bleed, hoge silanolactiviteit)
  • Metalen in het monster (chelatie → tailing)
  • Kolomoverbelasting (>50 µg op een 4.6mm kolom)
✓ Oplossingen:
  • ✓ Voeg 0.1% TFA (UV) of 0.1% mierenzuur (LC-MS) toe aan mobiele fase A
  • ✓ Kies een kolom met hoogzuivere endcapping: Waters XBridge BEH, Phenomenex Kinetex
  • ✓ Werk bij een pH ≥ 2 eenheden weg van de pKa
  • ✓ 0.1mM EDTA aan het monster (Fe/Cu-chelatie)
  • ✓ Verlaag het injectievolume naar ≤ 20 µL voor een 4.6mm kolom
Basislijndrift (baseline drift) medium

Symptoom: De basislijn stijgt of daalt systematisch gedurende >5 minuten

🔍 Diagnostische boom:
  1. 1. Gebruik je een gradiënt (B% neemt toe)?
    → JA: Ja → verschillende absorptie van fasen A vs B bij dλ. Oplosmiddelwisseling in de UV-cutoff. Controleer de UV-absorptie van het % organisch.
    → NEE: Verder (isocratisch)
  2. 2. Controleer de kolomtemperatuur — is deze stabiel tot ±0.5°C?
    → JA: Ja (stabiel) → verder
    → NEE: Instabiel → schakel de kolomthermostaat in (>25°C gecontroleerd)
  3. 3. Test: schakel de autosampler uit, laat alleen pomp+kolom+detector draaien
    → JA: De drift verdwijnt → contaminatie van de autosampler (reinig de naald, het septum)
    → NEE: Continue
  4. 4. Controleer de leeftijd van de lamp (D2 voor UV)
    → JA: Ja (>1500 uur) → vervang de lamp
    → NEE: Continue
⚠️ Typische oorzaken:
  • Gradiëntelutie met verschillende UV-cutoff van de fasen
  • Instabiele kolomtemperatuur
  • Autosampler-contaminatie van de naald/septum
  • UV-lamp oud (>1500h)
  • Detector-flowcel vervuild
  • Kolom niet geëquilibreerd (<10 kolomvolumes)
✓ Oplossingen:
  • ✓ Kolom voor-equilibreren gedurende 10-15 kolomvolumes bij 100% A
  • ✓ Kolomthermostaat aan, T 30-40°C stabiel
  • ✓ Reinig de detector-flowcel met een 50:50 ACN:H2O-oplossing
  • ✓ Vervang de D2-lamp indien >1500h
  • ✓ Gebruik baseline subtraction (Chromeleon, native Empower-functie)
Geen piek / verloren piek (no peak) critical

Symptoom: De verwachte analytpiek verschijnt niet op het chromatogram

🔍 Diagnostische boom:
  1. 1. Heeft de injectie daadwerkelijk plaatsgevonden?
    → JA: Controleer het autosampler-log, de pompdruk (moet dalen tijdens de injectie)
    → NEE: Autosampler-probleem → controleer de loop, de naald, het monster in de vial
  2. 2. Zit het monster in de vial (correct volume, niet verdampt)?
    → JA: Continue
    → NEE: Geen monster — opnieuw pipetteren
  3. 3. Monsterstabiliteit — >24h geleden bereid?
    → JA: Ja → degradatie. Bereid een vers monster opnieuw.
    → NEE: Continue
  4. 4. Controleer de detectiegolflengte t.o.v. de λmax van de stof
    → JA: Detectie bij λ komt NIET overeen met λmax → geen signaal. Scan DAD 200-400nm.
    → NEE: Continue
  5. 5. Test: injecteer een zuivere standaard (van bekende concentratie, vers)
    → JA: De standaard geeft een piek → probleem met het monster (matrix, derivatisering)
    → NEE: Ook geen piek met de standaard → systeemprobleem (kolom, fase, gradiënt)
⚠️ Typische oorzaken:
  • Monster niet uit de vial genomen (autosampler-bug)
  • Monster gedegradeerd (>24h pH/temp/licht)
  • Detectie bij de verkeerde golflengte
  • Verkeerde mobiele fase (bijv. vergeten TFA)
  • Kolom omgekeerd / verkeerde stationaire fase
  • De stof elueert op het front (V0) → niet vastgehouden, niet zichtbaar
✓ Oplossingen:
  • ✓ Bereid een vers monster opnieuw volgens het exacte protocol
  • ✓ UV-Vis DAD-scan 200-400nm + zoeken naar λmax
  • ✓ Controleer de samenstelling van de mobiele fase — is TFA toegevoegd?
  • ✓ Test de omgekeerde kolomrichting (voorzichtig!)
  • ✓ Voor retentie <1 min — verlaag de % B, MeOH in plaats van ACN
  • ✓ Controleer de verwachte retentietijd in de methodedatabase van de plug-in
Druk te hoog (pressure too high) critical

Symptoom: Pompdruk > 80% van het kolommaximum of systeem-shutdown met high-pressure error

🔍 Diagnostische boom:
  1. 1. Controleer of de kolom correct is aangesloten (richting van de pijl)
    → JA: OK
    → NEE: Kolom omgekeerd → draai om (nooit "achterstevoren" gebruiken)
  2. 2. Test: verwijder de kolom uit het systeem, laat alleen pomp+detector draaien
    → JA: Druk daalt naar <50 bar → probleem in de kolom (verstopt)
    → NEE: Druk blijft hoog → in-line filter verstopt, frit vervuild
  3. 3. Controleer het pre-kolomfilter (in-line frit)
    → JA: Vervuild en bruin → vervangen
    → NEE: Continue
  4. 4. Spoel de kolom terug met 50:50 ACN:H2O zonder de kolom — verdwijnt het?
    → JA: Deeltjes vast in de eerste mm — een flush van 30 min kan het herstellen
    → NEE: Vervang de kolom
⚠️ Typische oorzaken:
  • In-line filter (frit) verstopt met deeltjes
  • Buffer salting-out (precipitatie bij hoog %B)
  • Monster bevat zwevende deeltjes (filtreer 0.22 µm vóór injectie)
  • Kolom verstopt (column bed compaction)
  • Gradiënt met bufferfase + veel organisch → zoutprecipitatie
✓ Oplossingen:
  • ✓ Filtreer het monster ALTIJD door 0.22 µm PVDF vóór injectie
  • ✓ Vervang het in-line filter elke 100 injecties (of wanneer de druk >20% stijgt)
  • ✓ Gebruik GEEN >20mM fosfaatbuffer + >70% ACN (het zout slaat neer)
  • ✓ Spoel de kolom 30 min met 50:50 ACN:H2O in de omgekeerde richting (wanneer de fabrikant dit toestaat)
  • ✓ Pre-kolom 4×3mm ter bescherming van de hoofdkolom
Spookpieken (ghost peaks) high

Symptoom: Onverklaarde pieken op het chromatogram die afwezig zijn in de kalibratie

🔍 Diagnostische boom:
  1. 1. Test: blanco injectie (zuiver monsteroplosmiddel)
    → JA: Er verschijnt een spookpiek → contaminatie van het systeem of de eluenten
    → NEE: Verschijnt alleen bij het monster → matrix
  2. 2. Groeit de spookpiek met de gradiënt (elueert bij hoog %B)?
    → JA: Ja → overladen kolom of sterk vastgehouden uit een vorige run
    → NEE: Onafhankelijk van de gradiënt → autosampler carryover
  3. 3. Increase carryover wash (between injections)
    → JA: Helpt → carryover was de oorzaak. Sterker wasprotocol.
    → NEE: Continue
  4. 4. Injectie van zuiver water — is er een piek?
    → JA: Ja → contaminatie van de waterbron (organische stoffen uit het DI-systeem)
    → NEE: Continue
⚠️ Typische oorzaken:
  • Carryover in de autosampler-naald/loop
  • Contaminatie van het eluens (zelfs HPLC-grade)
  • Sterk vastgehouden componenten uit vorige runs
  • Plastic in de vials (ftalaten, PEG uit de doppen)
  • DI-water onvoldoende gezuiverd
✓ Oplossingen:
  • ✓ Versterk het wasprotocol: 100% B → 100% A → 50:50 (3 cycli)
  • ✓ Sterke was: 100% DMSO of 100% MeOH vóór de kalibratie
  • ✓ Filtreer de eluenten door 0.22 µm PTFE bij twijfel
  • ✓ Gebruik amberkleurig glas + doppen met Teflon-coating voor monsters
  • ✓ Periodieke gradiëntramp naar 100% B gedurende 10 min (clean-out)
📚 Wetenschappelijke referenties (Chicago Author-Date) — klik om uit te klappen
  1. Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. John Wiley & Sons. Chapter 17 (Troubleshooting) pp. 559-616. ISBN 978-0-470-16754-0. https://doi.org/10.1002/9780470508183 [link ↗]
  2. Dolan, John W.. 2014. LC Troubleshooting (monthly column 1989-2024). LCGC North America. [link ↗] — John Dolan 35-letnia seria miesięcznych artykułów problemowych
  3. Kromidas, Stavros. 2017. HPLC Made to Measure: A Practical Handbook for Optimization. 2nd ed. Wiley-VCH. ISBN 978-3-527-31377-1. — Praktyczny przewodnik problem-solving dla labs analitycznych
  4. Dolan, John W.. 2013. When to Modify Method Conditions. 192-199. [link ↗] — Decision flow for changing flow rate / temperature / %B vs swapping columns.
  5. Dong, Michael W.. 2019. HPLC and UHPLC for Practicing Scientists. 2nd ed. Wiley. ISBN 978-1-119-31378-3. https://doi.org/10.1002/9781119313793 [link ↗] — Chapter 9 covers troubleshooting modern UHPLC systems (sub-2 µm particles).
  6. Meyer, Veronika R.. 2010. Practical High-Performance Liquid Chromatography. 5th ed. Wiley. ISBN 978-0-470-68218-0. — Solid step-by-step problem isolation chapter (eluents, columns, instruments).
  7. Snyder, L. R., J. J. Kirkland, and J. L. Glajch. 1997. Practical HPLC Method Development. 2nd ed. Wiley. ISBN 978-0-471-00703-6. — Method-development companion volume with troubleshooting cross-refs.
  8. Carr, Peter W.. 2009. The new physical chemistry of HPLC. 1764-1772. https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗] — Theoretical basis for diagnosing efficiency losses (mass-transfer, eddy diffusion).
  9. Heyden, Yvan Vander, et al.. 2009. Robustness of pharmaceutical liquid chromatographic methods. 2120-2129. https://doi.org/10.1016/j.jchromb.2008.10.052 [link ↗] — How to diagnose method failures vs. system failures (Plackett-Burman).
  10. Engelhardt, Heinz. 2014. 100 Years of Chromatography. 2nd ed. Wiley-VCH. ISBN 978-3-527-33473-5. — Historical context for ghost-peak phenomenology (silica chemistry).
🧪 Oplosbaarheid en compatibiliteit met oplosmiddelen MolGod_SOLUB_1
Molecuul
Kofeina
Formule
C8H10N4O2
logP (XLogP3)
-0.10
Massa (g/mol)
194.19
Polariteit
Hydrofiel (polair)

⚠️ HSP-schatting (literatuur / group contribution). Indicatieve gegevens — vervangen geen experimenteel onderzoek.

Ra < R₀ = dobra mieszalność · Ra < 1,5×R₀ = graniczna · powyżej = słaba (R₀ — promień sfery Hansena tej molekuły) Dla tej molekuły R₀ = 9.

Oplosmiddel Compat. Ra Visueel GC-MS HPLC Toepassingen Referenties
Water (H₂O)21.7 g/L (pomiar)30.8
✗ NieA (aqueous) (RP)
buffercelkweekanalytischextractie (hydrofiel)
Ethanol (EtOH)~ Gem.9.8
✗ NieA/B modifier (RP/NP)
extractiespectroscopie (UV-Vis)syntheseHPLC-modifier
Methanol (MeOH)~ Gem.12.9
✗ NieA/B (RP) (RP)
HPLC (eluent)LC-MSKarl FischerUV-transparent do 205 nm
Acetone~ Gem.10.1
✗ NieB modifier (NP)
GC headspacekristallisatieontvettingsynthese
Acetonitrile (ACN)~ Gem.13.5
✗ NieB (RP) (RP)
HPLC-eluens (gouden standaard)LC-MS (wolny cut-off UV 190 nm)peptideanalyse
DMSO+ Goed7.3
✗ NieN/A (N/A)
NMR (d6-DMSO)celbiologie (cryopreservatie)medicijnafgiftesynthese
THF+ Goed8.6
✗ NieB (NP) (NP)
GPC/SEC (polymeeranalyse)Grignard-syntheseorganometaalverbindingen
DCM (CH₂Cl₂)+ Goed8.4
✓ TakB (NP) (NP)
extractieNP-HPLCGC-MSkristallisatie (antisolvent)
Chloroform (CHCl₃)~ Gem.10.7
✓ TakN/A (toxic) (N/A)
NMR (CDCl3)lipide-extractie (Folch-methode)NP-TLC
Hexane− Slecht18.9
✓ TakA (NP) (NP)
NP-HPLColie-extractie (lipiden)GC-MSTLC (NP)
Toluene− Slecht14.4
✓ TakB (NP) (NP)
NMR (d8-toluene)syntheseDean-Stark azeotrope droging
📚 Wetenschappelijke referenties voor oplosmiddelen (Chicago Author-Date) — klik om uit te vouwen

11 oplosmiddelen · 54 volledige citaties (NIST/CRC/IARC/Hansen/Reichardt/Smallwood/Wypych/Armarego/Snyder/GESTIS) — hieronder.

Water (H₂O)
  1. NIST — NIST Chemistry WebBook — Water (CAS 7732-18-5)
  2. CRC — CRC Handbook of Chemistry and Physics, 104th ed., Sec. 8 (Properties of Water)
  3. IAPWS — IAPWS Release on Static Dielectric Constant of Water
  4. Reichardt 2011 — Solvents and Solvent Effects in Organic Chemistry
  5. GESTIS — GESTIS Substance Database — Water
Ethanol (EtOH)
  1. NIST — NIST Chemistry WebBook — Ethanol (CAS 64-17-5)
  2. CRC — CRC Handbook — Ethanol physical constants
  3. Snyder & Kirkland — Modern Liquid Chromatography — Ethanol eluotropic
  4. Smallwood — Handbook of Organic Solvent Properties — Ethanol
  5. GESTIS — GESTIS Substance Database — Ethanol
Methanol (MeOH)
  1. NIST — NIST Chemistry WebBook — Methanol (CAS 67-56-1)
  2. CRC — CRC Handbook — Methanol physical constants
  3. Snyder & Kirkland — Modern Liquid Chromatography — MeOH eluotropic, eo=0.95
  4. GESTIS — GESTIS Substance Database — Methanol
Acetone
  1. NIST — NIST Chemistry WebBook — Acetone (CAS 67-64-1)
  2. CRC — CRC Handbook — Acetone physical & thermodynamic constants
  3. Hansen 2007 — Hansen Solubility Parameters — Acetone (dD=15.5, dP=10.4, dH=7.0)
  4. Smallwood — Handbook of Organic Solvent Properties — Acetone
  5. GESTIS — GESTIS Substance Database — Acetone
Acetonitrile (ACN)
  1. NIST — NIST Chemistry WebBook — Acetonitrile (CAS 75-05-8)
  2. CRC — CRC Handbook — Acetonitrile constants
  3. Snyder & Kirkland — Modern Liquid Chromatography — ACN gold-standard HPLC eluent
  4. Reichardt 2011 — Solvents and Solvent Effects — ACN dipolar aprotic
  5. GESTIS — GESTIS Substance Database — Acetonitrile
DMSO
  1. NIST — NIST Chemistry WebBook — DMSO (CAS 67-68-5)
  2. Wypych 2019 — Handbook of Solvents Vol. 1 — DMSO comprehensive properties
  3. Hansen 2007 — HSP — DMSO (dD=18.4, dP=16.4, dH=10.2)
  4. Reichardt 2011 — Solvents and Solvent Effects — DMSO E_T(30)=45.1, dipolar aprotic
  5. GESTIS — GESTIS Substance Database — DMSO
THF
  1. NIST — NIST Chemistry WebBook — THF (CAS 109-99-9)
  2. Armarego 2009 — Purification of Laboratory Chemicals — THF drying & peroxide test
  3. Hansen 2007 — Hansen Solubility Parameters — THF (dD=16.8, dP=5.7, dH=8.0)
  4. Smallwood — Handbook of Organic Solvent Properties — THF
  5. GESTIS — GESTIS Substance Database — Tetrahydrofuran
DCM (CH₂Cl₂)
  1. NIST — NIST Chemistry WebBook — Dichloromethane (CAS 75-09-2)
  2. IARC 71 — IARC Monograph 71 — DCM (Group 2A carcinogen)
  3. Hansen 2007 — Hansen Solubility Parameters — DCM (dD=18.2, dP=6.3, dH=6.1)
  4. Reichardt 2011 — Solvents and Solvent Effects — DCM polarity index
  5. GESTIS — GESTIS Substance Database — Dichloromethane
Chloroform (CHCl₃)
  1. NIST — NIST Chemistry WebBook — Chloroform (CAS 67-66-3)
  2. IARC 73 — IARC Monograph 73 — Chloroform (Group 2B carcinogen)
  3. Hansen 2007 — Hansen Solubility Parameters — CHCl3 (dD=17.8, dP=3.1, dH=5.7)
  4. Reichardt 2011 — Solvents and Solvent Effects — CHCl3 H-bond donor strength
  5. GESTIS — GESTIS Substance Database — Chloroform
n-Hexane
  1. NIST — NIST Chemistry WebBook — n-Hexane (CAS 110-54-3)
  2. ATSDR n-Hexane — ATSDR Toxicological Profile for n-Hexane — neuropatia obwodowa (n-Heksan NIE jest kancerogenem IARC)
  3. Hansen 2007 — Hansen Solubility Parameters — n-Hexane (dD=14.9, dP=0, dH=0)
  4. Snyder & Kirkland — Modern Liquid Chromatography — n-Hexane NP standard, eo=0.00
  5. GESTIS — GESTIS Substance Database — n-Hexane
Toluene
  1. NIST — NIST Chemistry WebBook — Toluene (CAS 108-88-3)
  2. IARC 71 — IARC Monograph 71 — Toluene
  3. Hansen 2007 — Hansen Solubility Parameters — Toluene (dD=18.0, dP=1.4, dH=2.0)
  4. Smallwood — Handbook of Organic Solvent Properties — Toluene
  5. GESTIS — GESTIS Substance Database — Toluene
Oplosbaarheidstheorie (toegepast bij de voorspelling van compatibiliteit):
  1. Yalkowsky, Samuel H., and Shri C. Valvani. 1980. "Solubility and Partitioning I: Solubility of Nonelectrolytes in Water." Journal of Pharmaceutical Sciences 69 (8): 912–922. https://doi.org/10.1002/jps.2600690814 — General Solubility Equation (GSE): logS = 0.5 − logP − 0.01(MP−25).
  2. Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. CRC Press. https://doi.org/10.1201/9781420006834 — HSP-triplet (dD, dP, dH) + Ra-formule.
  3. Stefanis, E., and C. Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." Int J Thermophys 29: 568–585. https://doi.org/10.1007/s10765-008-0415-z
  4. Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Wiley-VCH. https://doi.org/10.1002/9783527632220 — E_T(30) polarity scale, solwatochromia.
  5. Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Wiley. https://doi.org/10.1002/9780470508183 — Eluotropic series, polarity index.
  6. Van Krevelen, D. W., and K. Te Nijenhuis. 2009. Properties of Polymers. 4th ed. Elsevier. https://doi.org/10.1016/B978-0-08-054819-7.X0001-5 — Hoftyzer–Van Krevelen group contribution dla dD/dP/dH z SMILES.
  7. Marcus, Yizhak. 1998. The Properties of Solvents. Wiley Series in Solution Chemistry, Vol. 4. ISBN 9780471983699 — Volledige tabellarische set van 250+ oplosmiddelen (ε, μ, doniciteit, acceptorgetallen).
  8. PubChem Compound Database — CAS 58-08-2 lookup ↗ — logP (XLogP3), water solubility experimental + predicted.

Volledige bibliografie in het accordeon REFERENTIES (onderaan de pagina) — Chicago Manual of Style 17th ed., Author-Date.

🧮 Laboratoriumcalculators (8) MolGod_LABCALC_1
Verdunning (C₁V₁=C₂V₂)
Molariteit (M=n/V)
pH-buffer (Henderson-Hasselbalch)
Beer-Lambert (A=εcl)
Massa → Mol
Concentratie % → M
ppm → mg/L
Temperatuur C↔F↔K

Geverifieerde formules: IUPAC Gold Book ↗, DOI ↗

📊 Spectroscopische spectradatabases MolGod_SPECDB_3
📋 Generator van laboratoriumprotocollen MolGod_PROTOCOL_1

Protocol gegenereerd op basis van: GHS SDS, Aldrich Lab Guide ↗

🏷️ Etikettengenerator (QR) MolGod_LABEL_1
Cafeïne• Caffeine / 1,3,7-Trimethylxanthine• CAS: 58-08-2• Formule: C8H10N4O2• Massa: 194.19 g/molWAARSCHUWINGGHS-GEVARENAANDUIDINGEN:H302: Schadelijk bij inslikken.P301+P312 P330 P501 P264 P270Uitsluitend voor laboratoriumgebruik!DH ScientificScience first. Commerce as consequence.Batchnr.: Nettogewicht: Prod.:
Deskryptory Lipinskiego (struktura)
ADMET-voorspellingen worden geladen…
⏳ Stabiliteits- & houdbaarheidsadviseur Arrhenius
Methodologie: Arrhenius equation k = A·exp(-Ea/RT). Citeren: Connors KA et al. 1986 · ICH Q1A(R2)

Voer de bewaaromstandigheden in → het Arrhenius-algoritme voorspelt de resterende concentratie, de halveringstijd en een gebruiksaanbeveling.

Visuele tekenen van afbraak:
❄️ Bewaaraanbevelingen
Temperature:
15-25°C
Container:
HDPE/glass, dry
Incompatible:
Strong oxidizers
🧪 Assistent voor bereiding van oplossingen (Smart Prep) MolGod_PREP_2

Voer in wat u wilt bereiden — ik genereer een SOP

Voorbeelden hieronder — klik om in te voegen:
Voorgedefinieerde recepten:
📚 Overzicht van de wetenschappelijke literatuur — CAS 58-08-2MolGod_LITHUB_MAIN
⭐ Belangrijkste bevindingen (wetenschappelijke literatuur) 7 publicaties
🏆 CAS 58-08-2 — multi-criteria ranking (W12): 30% citaties · 20% recentheid · 20% onderwerp · 15% historisch · 15% open access.
  1. #1
    Nehlig, A. (2017) · Pharmacological Reviews
    Waarom het belangrijk is: Verplicht citaat (canon) · 620 citaties
    SCORE 13.08 Farmacologie MUST-CITE Citaties: 620 DOI ↗
  2. #2
    Actions of caffeine in the brain with special reference to factors that contribute to its widespread use
    Fredholm, B.B.; Bättig, K.; Holmén, J.; Nehlig, A.; Zvartau, E.E. (1999) · Pharmacological Reviews
    Waarom het belangrijk is: Verplicht citaat (canon) · grote impact (2950 citaties)
    SCORE 12.66 Mechanisme MUST-CITE Citaties: 2950
  3. #3
    Wikoff, D.; Welsh, B.T.; Henderson, R.; Brorby, G.P.; Britt, J. et al. (2018) · Food and Chemical Toxicology
    Waarom het belangrijk is: Verplicht citaat (canon) · 540 citaties · overzichtsartikel
    SCORE 12.4 Overzicht MUST-CITE Citaties: 540 DOI ↗
  4. #4
    Heckman, M.A.; Weil, J.; Gonzalez de Mejia, E. (2010) · Journal of Food Science
    Waarom het belangrijk is: Verplicht citaat (canon) · 850 citaties · overzichtsartikel
    SCORE 10.59 Overzicht MUST-CITE Citaties: 850 DOI ↗
  5. #5
    O'Callaghan, F.; Muurlink, O.; Reid, N. (2022) · Risk Management and Healthcare Policy
    Waarom het belangrijk is: Verplicht citaat (canon) · 190 citaties
    SCORE 10.44 Farmacologie MUST-CITE Citaties: 190 DOI ↗
  6. #6
    Cappelletti, S.; Piacentino, D.; Sani, G.; Aromatario, M. (2010) · Current Neuropharmacology
    Waarom het belangrijk is: Verplicht citaat (canon) · 480 citaties
    SCORE 8.05 Farmacologie MUST-CITE Citaties: 480 DOI ↗
  7. #7
    Belay, A.; Ture, K.; Redi, M.; Asfaw, A. (2008) · Food Chemistry
    Waarom het belangrijk is: Verplicht citaat (canon) · 280 citaties
    SCORE 7.35 Analytiek MUST-CITE Citaties: 280 DOI ↗
📈 HPLC-gradiënt — optimalisator (LSS) SJABLOON

Gradiënt gebaseerd op PubChem XLogP3 + LSS (Snyder et al. 2010, hfdst. 9).

  • Kolom: C18
  • Buffer: phosphate
  • Debiet: 1 mL/min
  • logP: -0.1 (PubChem XLogP3)
  • Ramp: 5% → 95% B, 10 min
  • Totale analysetijd: 23 min
t (min) %A %B flow (mL/min) Opmerking
0 95 5 1 start (evenwicht)
2 95 5 1 einde van de initiële hold
12 5 95 1 einde van de LSS-ramp
17 5 95 1 kolomspoeling
18 95 5 1 terug naar init
23 95 5 1 her-equilibratie
📚 Wetenschappelijke referenties (Chicago Author-Date)
  1. Snyder, Lloyd R., John W. Dolan, and Joseph J. Kirkland. 2010. Introduction to Modern Liquid Chromatography. Wiley. — Chapter 9 — gradient elution, LSS theory (cited as Snyder et al. 2010 in tool description).
  2. Schoenmakers, Peter J. 1986. Optimization of Chromatographic Selectivity: A Guide to Method Development. Elsevier. — Numerical optimization of gradient programs.
  3. Snyder, L. R., and J. W. Dolan. 2007. High-Performance Gradient Elution: The Practical Application of the Linear-Solvent-Strength Model. Wiley. — Foundational LSS reference for the %B_init = 5 + 8·logP heuristic implemented here.
  4. Nikitas, Pavlos, and Adrian Pappa-Louisi. 2009. "Retention models for isocratic and gradient elution in reversed-phase liquid chromatography." Journal of Chromatography A 1216: 1737-1755. [DOI ↗] — Modern review of gradient retention models — basis for non-LSS extensions.
  5. Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772. [DOI ↗]
  6. Dong, Michael W. 2019. HPLC and UHPLC for Practicing Scientists. Wiley. https://doi.org/10.1002/9781119313793. — Modern UHPLC gradient programming, sub-2 µm scaling rules.
  7. Wu, Naijun, and Anton M. Clausen. 2007. "Fundamental and practical aspects of ultrahigh pressure liquid chromatography for fast separations." Journal of Separation Science 30: 1167-1182. [DOI ↗]
  8. Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531. [DOI ↗] — Reference for orthogonal gradient design (2D-LC second dimension).
  9. Dolan, John W.. 2013. "When to Modify Method Conditions." LCGC North America 31: 192-199.
  10. Meyer, Veronika R. 2010. Practical High-Performance Liquid Chromatography. Wiley. — Chapter 7 — practical gradient design with isokratyczny scouting.

REST: /wp-json/molgod/v1/hplc/gradient/58-08-2

🌈 Detector + golflengte (UV/Vis) 273 nm
VerbindingCaffeine
λmax273 nm
λmin245 nm
εmax (M⁻¹·cm⁻¹)9 700
Oplosmiddel (referentie)water
Voorgestelde λ273 nm
Aanbevolen detectorUV
AlternatievenPDA/DAD, MS, FLD

Gegevensbron: Skoog 2017, p. 367

📚 Wetenschappelijke referenties (Chicago Author-Date) 10 refs

METODA Methodebibliografie

  1. Skoog, Douglas A., F. James Holler, and Stanley R. Crouch. 2017. "Principles of Instrumental Analysis." 7th ed. Cengage Learning. ISBN 978-1-305-57721-3.
  2. Perkampus, Heinz-Helmut. 1992. "UV-VIS Spectroscopy and Its Applications." Springer. ISBN 978-3-642-77479-9. →
  3. Sadek, Paul C.. 2002. "The HPLC Solvent Guide." 2nd ed. Wiley-Interscience. ISBN 978-0-471-41138-4.
  4. Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. Wiley. ISBN 978-0-470-16754-0. →
  5. Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. ISBN 978-1-119-31378-3. →
  6. Meyer, Veronika R.. 2010. "Practical High-Performance Liquid Chromatography." 5th ed. Wiley. ISBN 978-0-470-68218-0.
  7. Stoll, Dwight R., and Peter W. Carr. 2017. "Two-Dimensional Liquid Chromatography: A State of the Art Tutorial." Analytical Chemistry 89: 519-531 →
  8. Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 →
  9. Kazakevich, Yuri V., and Rosario LoBrutto, eds.. 2007. "HPLC for Pharmaceutical Scientists." Wiley-Interscience. ISBN 978-0-471-68162-4. →
  10. Kim, Sunghwan, et al.. 2023. "PubChem 2023 update." Nucleic Acids Research 51: D1373-D1380 →

REST: /wp-json/molgod/v1/hplc/detector/58-08-2

📐 HPLC-pieksymmetriecalculator (USP Tf / As)

Bereken de USP-tailingfactor (Tf) en de asymmetrie (As) uit de piekhalfbreedtes. Voer a (linker halfbreedte) en b (rechter halfbreedte) in, gemeten op 5% of 10% van de piekhoogte.

📚 Referenties (Chicago Author-Date)
  1. USP General Chapter <621>. 2024. "Chromatography." United States Pharmacopeial Convention. [link ↗] — Defines USP Tailing Factor T = (a+b)/(2a) measured at 5% peak height.
  2. International Council for Harmonisation (ICH). 2023. "Validation of Analytical Procedures Q2(R2)." ICH Expert Working Group. [link ↗] — Tailing factor is a system suitability parameter (Section 6).
  3. Foley, Joe P., and John G. Dorsey. 1983. "Equations for calculation of chromatographic figures of merit for ideal and skewed peaks." Analytical Chemistry 55: 730-737 https://doi.org/10.1021/ac00255a033 [link ↗] — Original asymmetry factor As = b/a at 10% height (Foley & Dorsey 1983).
  4. Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." Wiley. https://doi.org/10.1002/9780470508183 [link ↗] — Chapter 2.4 — peak shape diagnostics and remedies.
  5. Dolan, John W.. 2003. "Peak tailing and resolution." LCGC North America 21: 610-614 [link ↗] — How tailing factor degrades effective resolution.
  6. Vivó-Truyols, Gabriel, and Hans-Gerd Janssen. 2010. "Probabilistic approach to peak deconvolution in chromatography." Analytical Chemistry 82: 8525-8531 https://doi.org/10.1021/ac101742z [link ↗] — Modern numerical deconvolution for asymmetric peaks.
  7. Kromidas, Stavros. 2017. "HPLC Made to Measure: A Practical Handbook for Optimization." Wiley-VCH. — Practical Tf and As thresholds for routine QC.
  8. Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." Wiley. https://doi.org/10.1002/9781119313793 [link ↗]
  9. Meyer, Veronika R.. 2010. "Practical High-Performance Liquid Chromatography." Wiley.
  10. Heyden, Yvan Vander, et al.. 2009. "Robustness of pharmaceutical liquid chromatographic methods." Journal of Chromatography B 877: 2120-2129 https://doi.org/10.1016/j.jchromb.2008.10.052 [link ↗]
📊 Calculator voor resolutie en schotelgetal (Rs, N, H)

Bereken de resolutie Rs, het aantal theoretische schotels N en de HETP (H) voor een paar HPLC-pieken. Voer de retentietijden, piekbreedtes (op 50% of aan de basis) en de kolomlengte in.

📚 Referenties (Chicago Author-Date)
  1. Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. John Wiley & Sons. ISBN 978-0-470-16754-0. https://doi.org/10.1002/9780470508183 [link ↗] — Chapter 2 covers resolution, plate count and HETP fundamentals (Snyder et al. 2010).
  2. USP General Chapter <621>. 2024. "Chromatography." USP-NF 2024 ed. United States Pharmacopeial Convention. [link ↗] — Defines Rs >= 1.5 acceptance criterion and N calculation methods.
  3. Dolan, John W.. 2003. "How much resolution is enough?." LCGC North America 21: 350-353 [link ↗] — Practical guidance on Rs targets for routine method development.
  4. Van Deemter, J. J., F. J. Zuiderweg, and A. Klinkenberg. 1956. "Longitudinal diffusion and resistance to mass transfer as causes of nonideality in chromatography." Chemical Engineering Science 5: 271-289 https://doi.org/10.1016/0009-2509(56)80003-1 [link ↗] — Origin of N = 5.54·(tr/w0.5)² half-height plate count formulation.
  5. Giddings, J. Calvin. 1965. "Dynamics of Chromatography, Part I: Principles and Theory." Marcel Dekker. ISBN 978-0-8247-1357-7. — Resolution equation Rs = (1/4)·√N·(α-1)/α·k/(1+k) (master equation).
  6. Foley, Joe P., and John G. Dorsey. 1983. "Equations for calculation of chromatographic figures of merit for ideal and skewed peaks." Analytical Chemistry 55: 730-737 https://doi.org/10.1021/ac00255a033 [link ↗] — Skewed-peak corrections to apparent N.
  7. Knox, John H.. 1977. "Practical aspects of LC theory." Journal of Chromatographic Science 15: 352-364 https://doi.org/10.1093/chromsci/15.9.352 [link ↗]
  8. Carr, Peter W.. 2009. "The new physical chemistry of HPLC." Journal of Chromatography A 1216: 1764-1772 https://doi.org/10.1016/j.chroma.2008.11.094 [link ↗]
  9. Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. ISBN 978-1-119-31378-3. https://doi.org/10.1002/9781119313793 [link ↗]
  10. Meyer, Veronika R.. 2010. "Practical High-Performance Liquid Chromatography." 5th ed. Wiley. ISBN 978-0-470-68218-0.
🧪 System Suitability — live calculator (USP <621>)

Voer gegevens van 5-6 injecties in (areas, tr, tailing, plates) — de calculator berekent %RSD, gemiddelden en controleert de conformiteit met USP <621>. Je kunt CSV plakken (door komma's gescheiden) of afzonderlijke waarden bewerken.

📚 Referenties (Chicago Author-Date)
  1. USP General Chapter <621>. 2024. "Chromatography (System Suitability section)." USP-NF 2024 ed. United States Pharmacopeial Convention. [link ↗] — Defines RSD area < 2%, tailing < 2.0, N > 2000 acceptance criteria.
  2. International Council for Harmonisation (ICH). 2023. "Validation of Analytical Procedures Q2(R2)." ICH Expert Working Group. [link ↗] — Section 5.4 — system suitability is part of method validation.
  3. US Food and Drug Administration (FDA). 2018. "Reviewer Guidance: Validation of Chromatographic Methods." US Food and Drug Administration. [link ↗] — CDER reviewer perspective on chromatographic validation expectations.
  4. Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. "Introduction to Modern Liquid Chromatography." 3rd ed. Wiley. — Chapter 2 — system suitability fundamentals (RSD, Tf, N).
  5. Heyden, Yvan Vander, et al.. 2009. "Robustness of pharmaceutical liquid chromatographic methods." — Robustness vs. system suitability — design-of-experiments framework.
  6. Rozet, Eric, et al.. 2013. "Analysis of recent pharmaceutical regulatory documents on analytical method validation."
  7. European Medicines Agency (EMA). 2011. "Guideline on bioanalytical method validation EMEA/CHMP/EWP/192217/2009." EMA. [link ↗] — EMA companion guideline with bioanalytical SS criteria.
  8. Dong, Michael W.. 2019. "HPLC and UHPLC for Practicing Scientists." 2nd ed. Wiley. — UHPLC-specific suitability adjustments (n=5 vs. n=6).
  9. Kazakevich, Yuri V., and Rosario LoBrutto, eds.. 2007. "HPLC for Pharmaceutical Scientists." Wiley-Interscience.
  10. AOAC International. 2016. "Appendix F: Guidelines for Standard Method Performance Requirements." AOAC INTERNATIONAL. [link ↗] — Alternative SS thresholds for food/dietary samples.
🌍 Wereldwijd voorkomen (3)MolGod_ABUND_1

Belangrijkste regio's van natuurlijk voorkomen en locaties van industriële productie voor CAS 58-08-2.

Bibliografie (Chicago)
  • U.S. Geological Survey. 2024. "Mineral Commodity Summaries 2024." https://pubs.usgs.gov/periodicals/mcs2024/.
  • British Geological Survey. 2023. "World Mineral Production 2018-2022." Keyworth: BGS.
  • International Energy Agency. 2023. "Critical Minerals Market Review 2023." https://www.iea.org/reports/critical-minerals-market-review-2023.
  • USGS. 2024. "Mineral Resources Online Spatial Data." U.S. Geological Survey. https://mrdata.usgs.gov/.
  • BGS. 2024. "World Mineral Statistics." British Geological Survey. https://www.bgs.ac.uk/mineralsuk/.
  • Emsley, John. 2001. "Nature's Building Blocks: An A-Z Guide to the Elements." Oxford University Press.
  • Wood, Eric J. 2013. "The Periodic Table and the Chemical Industry." Chemistry Education Research and Practice 14 (1): 5-16.
  • Tufte, Edward R. 2006. "Beautiful Evidence." Graphics Press.
  • Few, Stephen. 2009. "Now You See It: Simple Visualization Techniques for Quantitative Analysis." Analytics Press.
  • Mayer, Richard E. 2009. "Multimedia Learning." 2nd ed. Cambridge University Press.
⚗️ Jonizacja w funkcji pH (Henderson-Hasselbalch)MolGod_PHION_1

Typ: Zasada · pKa: 14

024681012140%50%100%% zjonizowany% niejonowypH
pH% jonowy% niejonowy
0100.0 %0.0 %
2100.0 %0.0 %
4100.0 %0.0 %
6100.0 %0.0 %
8100.0 %0.0 %
10100.0 %0.0 %
1299.0 %1.0 %
1450.0 %50.0 %
Źródła dla tej substancji (9)
  • CRC Handbook 91st ed.
    Lide, David R., ed. 2010. CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press.
  • CRC Handbook 105th ed.
    Rumble, John R., Thomas J. Bruno, Maria J. Doa, and Donald R. Burgess, eds. 2024. CRC Handbook of Chemistry and Physics. 105th ed. Boca Raton, FL: CRC Press.
  • NIST WebBook — link
    Linstrom, Peter J., and William G. Mallard, eds. 2024. NIST Chemistry WebBook. NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology.
  • PubChem CID 2519 — link
    Kim, Sunghwan, Jie Chen, Tiejun Cheng, Asta Gindulyte, Jia He, Siqian He, Qingliang Li, et al. 2023. "PubChem 2023 update." Nucleic Acids Research 51 (D1): D1373-D1380. PubChem CID 2519.
  • DrugBank DB00201 — link
    Knox, Craig, Mike Wilson, Christen M. Klinger, Mark Franklin, Eponine Oler, Alex Wilson, Allison Pon, et al. 2024. "DrugBank 6.0: the DrugBank Knowledgebase for 2024." Nucleic Acids Research 52 (D1): D1265-D1275. DrugBank ID DB00201.
  • ChEMBL CHEMBL113 — link
    Zdrazil, Barbara, Eloy Felix, Fiona Hunter, Emma J. Manners, James Blackshaw, Sybilla Corbett, Marleen de Veij, et al. 2024. "The ChEMBL Database in 2023." Nucleic Acids Research 52 (D1): D1180-D1192. ChEMBL ID CHEMBL113.
  • IUPAC
    Perrin, Douglas D. 1965. Dissociation Constants of Organic Bases in Aqueous Solution. IUPAC. London: Butterworths.
  • NIST
    Goldberg, Robert N., Nand Kishore, and Rebecca Lennen. 2002. "Thermodynamic Quantities for the Ionization Reactions of Buffers." Journal of Physical and Chemical Reference Data 31 (2): 231-370.
Bibliografia metody (Chicago)
  • Henderson, L. J. 1908. "Concerning the Relationship between the Strength of Acids and Their Capacity to Preserve Neutrality." American Journal of Physiology 21 (4): 173-179.
  • Hasselbalch, K. A. 1917. "Die Berechnung der Wasserstoffzahl des Blutes aus der freien und gebundenen Kohlensäure desselben." Biochemische Zeitschrift 78: 112-144.
  • Po, Henry N., and N. M. Senozan. 2001. "The Henderson-Hasselbalch Equation: Its History and Limitations." Journal of Chemical Education 78 (11): 1499-1503.
  • Avdeef, Alex. 2012. "Absorption and Drug Development: Solubility, Permeability, and Charge State." 2nd ed. Wiley.
  • Avdeef, Alex. 2007. "Solubility of sparingly-soluble ionizable drugs." Advanced Drug Delivery Reviews 59 (7): 568-590.
  • Volgyi, Gergely, et al. 2007. "Potentiometric and spectrophotometric pKa determination of water-insoluble compounds." Analytica Chimica Acta 583 (2): 418-428.
  • Fini, Adamo, Giuseppe Fazio, and Giuseppina Feroci. 1997. "Solubility and solubilization properties of non-steroidal anti-inflammatory drugs." Pharmaceutica Acta Helvetiae 70 (4): 305-318.
  • Mauger, John W., Anthony N. Paruta, and Robert J. Gerraughty. 1972. "Solubilities of sulfadiazine, sulfisomidine, and sulfadimethoxine." Journal of Pharmaceutical Sciences 61 (1): 94-97.
  • Lyman, Warren J., William F. Reehl, and David H. Rosenblatt. 1990. "Handbook of Chemical Property Estimation Methods." American Chemical Society.
  • Marcus, Yizhak. 1998. "The Properties of Solvents." Wiley.
  • Serjeant, E. P., and Boyd Dempsey. 1979. Ionisation Constants of Organic Acids in Aqueous Solution. IUPAC Chemical Data Series No. 23. Oxford: Pergamon Press.
  • Perrin, Douglas D. 1965. Dissociation Constants of Organic Bases in Aqueous Solution. IUPAC. London: Butterworths.
  • Goldberg, Robert N., Nand Kishore, and Rebecca Lennen. 2002. "Thermodynamic Quantities for the Ionization Reactions of Buffers." Journal of Physical and Chemical Reference Data 31 (2): 231-370.
  • Rumble, John R., Thomas J. Bruno, Maria J. Doa, and Donald R. Burgess, eds. 2024. CRC Handbook of Chemistry and Physics. 105th ed. Boca Raton, FL: CRC Press.
  • Lide, David R., ed. 2010. CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press.
  • Kim, Sunghwan, Jie Chen, Tiejun Cheng, Asta Gindulyte, Jia He, Siqian He, Qingliang Li, et al. 2023. "PubChem 2023 update." Nucleic Acids Research 51 (D1): D1373-D1380.
  • Knox, Craig, Mike Wilson, Christen M. Klinger, Mark Franklin, Eponine Oler, Alex Wilson, Allison Pon, et al. 2024. "DrugBank 6.0: the DrugBank Knowledgebase for 2024." Nucleic Acids Research 52 (D1): D1265-D1275.
  • Zdrazil, Barbara, Eloy Felix, Fiona Hunter, Emma J. Manners, James Blackshaw, Sybilla Corbett, Marleen de Veij, et al. 2024. "The ChEMBL Database in 2023." Nucleic Acids Research 52 (D1): D1180-D1192.
  • Kanehisa, Minoru, Miho Furumichi, Yoko Sato, Masayuki Kawashima, and Mari Ishiguro-Watanabe. 2023. "KEGG for taxonomy-based analysis of pathways and genomes." Nucleic Acids Research 51 (D1): D587-D592.
  • Linstrom, Peter J., and William G. Mallard, eds. 2024. NIST Chemistry WebBook. NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology.
  • Nelson, David L., and Michael M. Cox. 2017. Lehninger Principles of Biochemistry. 7th ed. New York: W. H. Freeman.
📈 UV-VIS-spectrumvoorspeller (200-400 nm) λmax 273 nm MolGod_UVVIS_1
0%25%50%75%100%200250300350400273 nmA = ε·c·lA / Aₘₐₓ (%)
VerbindingCaffeine
λmax273 nm
λmin245 nm
εmax (M⁻¹·cm⁻¹)9 700
Oplosmiddel (query)water
Oplosmiddel (referentie)water
Concentratie (M)1e-4
Weglengte (cm)1
FWHM van de curve56 nm

Model: gausscurve gecentreerd op λmax, geschaald volgens de wet van Beer-Lambert A = ε · c · l. Transmissie T = 10^(-A) · 100%.

📚 Wetenschappelijke referenties (Chicago Author-Date)
  1. Mansouri RA; Aboubakr EM; Alshaibi HF; Fouda WM; Banjabi AA; Al-Bazi MM. 2026. "Calcium Carbonate-Stabilized Nano-Caffeine Emulsion Attenuates Diabetic Cardiomyopathy via Antioxidant, Anti-Inflammatory, and Anti-Fibrotic Pathways in Type 2 Diabetic Rats with HPLC-Quantified Cardiac Caffeine Levels." International journal of nanomedicine. https://doi.org/10.2147/IJN.S573949. [DOI]
  2. Hategekimana F; Elçin AE; Elçin YM. 2026. "Green synthesis of caffeine-catalyzed citric acid-PPG/PEG crosslinked alginate hydrogel scaffolds for prospective biomedical applications." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151850. [DOI]
  3. Becerra-Lovera A, Anaya-Mancipe J, Díaz-Martin R, Dias M, Souza D.. 2026. "Eugenol-Based Epoxy Vitrimers: Caffeine and Zinc Acetate as Potential Alternative Catalysts in Curing Kinetics and Dynamic Network Properties." .
  4. Baral AK, Talukdar M, Singh S.. 2025. "Thermo-acoustic investigation on mixtures of Tetramethyl ammonium hydroxide and caffeine in aqueous medium with the goal to understand their mutual interactions." . https://doi.org/10.1186/s13065-025-01684-y. [DOI]
  5. Dos Santos ARP; Lima BCS; Couto GJ; Carvalho L; Magna LR; Nogueira MH. 2025. "Antibiofilm effect of caffeine against Listeria monocytogenes and Escherichia coli in grape and apple fruit juices." Biofouling. https://doi.org/10.1080/08927014.2025.2515923. [DOI]
  6. Vignale FA; Hernandez Garcia A; Modenutti CP; Sosa EJ; Defelipe LA; Oliveira R. 2025. "Yerba mate (Ilex paraguariensis) genome provides new insights into convergent evolution of caffeine biosynthesis." eLife. https://doi.org/10.7554/eLife.104759. [DOI]
  7. Tan BJ; Xiao B; Tan EK. 2024. "Elevated neutrophils and uncontrolled asthma: the effects of caffeine, diet and co-morbidities." The Journal of asthma : official journal of the Association for the Care of Asthma. https://doi.org/10.1080/02770903.2024.2332924. [DOI]
  8. Latunra AI; Heryanto H; Tahir D; Ardiansa A. 2024. "Analytical insight into caffeine extraction from typica coffee leaves based on crystallinity enhancement, optical phonon vibration upshift, and morphological evolution." Journal of food science. https://doi.org/10.1111/1750-3841.17443. [DOI]
  9. Suenaga S, Kataoka H, Hasegawa K, Koga R, Tsunoda C, Kuwashima W, Tsuchida T, Goto S.. 2024. "How Does the Powder Mixture of Ibuprofen and Caffeine Attenuate the Solubility of Ibuprofen? Comparative Study for the Xanthine Derivatives to Recognize Their Intermolecular Interactions Using Fourier-Transform Infrared (FTIR) Spectra, Differential Scanning Calorimetry (DSC), and X-ray Powder Diffractometry (XRPD)." . https://doi.org/10.1021/acs.molpharmaceut.4c00429. [DOI]
  10. Rahimi MR; Semenova EA; Larin AK; Kulemin NA; Generozov EV; Łubkowska B. 2023. "The ADORA2A TT Genotype Is Associated with Anti-Inflammatory Effects of Caffeine in Response to Resistance Exercise and Habitual Coffee Intake." Nutrients. https://doi.org/10.3390/nu15071634. [DOI]
  11. Linstrom, Peter J., and William G. Mallard, eds. 2023. NIST Chemistry WebBook, NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology. [DOI]
  12. Mayerhöfer, Thomas G., Samir Pahlow, and Jürgen Popp. 2020. "The Bouguer-Beer-Lambert Law: Shining Light on the Obscure." ChemPhysChem 21 (18): 2029-2046. [DOI]
  13. Skoog, Douglas A., F. James Holler, and Stanley R. Crouch. 2017. Principles of Instrumental Analysis. 7th ed. Boston: Cengage Learning. ISBN 978-1-305-57721-3.
  14. Lindon, John C., George E. Tranter, and David W. Koppenaal, eds. 2017. "Encyclopedia of Spectroscopy and Spectrometry." 3rd ed. Amsterdam: Academic Press. ISBN 978-0-12-803224-4.
  15. Field, Leslie D., Sev Sternhell, and John R. Kalman. 2013. "Organic Structures from Spectra." 5th ed. Chichester: Wiley. ISBN 978-1-119-96582-6.
  16. Reusch, William. 2013. "Virtual Textbook of Organic Chemistry: Spectroscopy." East Lansing, MI: Michigan State University.
  17. Lampman, Gary M., Donald L. Pavia, George S. Kriz, and James R. Vyvyan. 2010. "Spectroscopy." 4th ed. Belmont, CA: Cengage Learning. ISBN 978-0-495-88992-9.
  18. Kalsi, P. S. 2010. "Spectroscopy of Organic Compounds." 6th ed. New Delhi: New Age International. ISBN 978-81-224-2032-9.
  19. Williams, Dudley H., and Ian Fleming. 2008. "Spectroscopic Methods in Organic Chemistry." 6th ed. London: McGraw-Hill. ISBN 978-0-07-711559-0.
  20. Sadek, Paul C. 2002. The HPLC Solvent Guide. 2nd ed. Hoboken: Wiley. ISBN 978-0-471-41242-2.
  21. Banwell, Colin N., and Elaine M. McCash. 1994. "Fundamentals of Molecular Spectroscopy." 4th ed. London: McGraw-Hill. ISBN 978-0-07-707976-1.
  22. Perkampus, Heinz-Helmut. 1992. UV-VIS Spectroscopy and Its Applications. Berlin: Springer. https://doi.org/10.1007/978-3-642-77479-9.
  23. Fieser, Louis F. 1949. "Extension of Woodward's Rules for Prediction of Conjugated Diene Absorption." Journal of the American Chemical Society 71 (5): 1854-1857. [DOI]
  24. Woodward, Robert B. 1942. "Structure and the Absorption Spectra of Alpha,Beta-Unsaturated Ketones." Journal of the American Chemical Society 64 (1): 72-75. [DOI]
  25. Beer, August. 1852. "Bestimmung der Absorption des rothen Lichts in farbigen Flüssigkeiten." Annalen der Physik und Chemie 86: 78-88. https://doi.org/10.1002/andp.18521620505.
  26. Lambert, Johann Heinrich. 1760. Photometria. Augsburg: Sumptibus Vidae.

📖 Wartość λmax = 273 nm pochodzi z bazy/literatury. Brak niezależnego potwierdzenia krzyżowego (NIST / CrossRef / PubChem) — weryfikacja krzyżowa niedostępna.

REST: /wp-json/molgod/v1/spectra/uv-vis/58-08-2?solvent=water&path_length_cm=1

☣️ Toxiciteit (LD50 / LC50) GHS Cat 3 — MatigMolGod_LD50_1
LD50
192 mg/kg[1]
Gatunek / droga
Rat / doustnie
Klasyfikacja
Moderately toxic[2][3]
Skala GHS (Acute Toxicity, oral, mg/kg bw):
Cat 1 (≤5)
Cat 2 (5–50)
Cat 3 (50–300)
Cat 4 (300–2000)
Cat 5 (2000–5000)

Bron: Peters 1967, Toxicol. Appl. Pharmacol.; ChemView (EPA 2024) (1967). CAS 58-08-2.

LD50/LC50-gegevens zijn uitsluitend indicatief; zij vervangen niet het veiligheidsinformatieblad (SDS) noch een deskundige toxicologische beoordeling. GHS-classificatie voor de orale route (mg/kg bw) volgens UN GHS, 10e rev. 2023, Annex 1 §3.1.1.

Bibliografie (Chicago)
  1. U.S. EPA. 2024. "ChemView." Washington, DC: U.S. Environmental Protection Agency.
  2. United Nations. 2023. "Globally Harmonized System of Classification and Labelling of Chemicals (GHS)." 10th rev. ed. New York: UN.
  3. Hodge, Harold C., and James H. Sterner. 1949. "Tabulation of toxicity classes." American Industrial Hygiene Association Quarterly 10 (4): 93-96.
Dalsze źródła (metodyka, nie cytowane bezpośrednio):
  • U.S. EPA. 2024. "ChemView." https://chemview.epa.gov/.
  • Lipnick, Robert L., et al. 1995. "Comparison of the up-and-down, conventional LD50, and fixed-dose acute toxicity procedures." Food and Chemical Toxicology 33 (3): 223-231.
  • ATSDR. 2024. "Toxicological Profiles." Agency for Toxic Substances and Disease Registry. https://www.atsdr.cdc.gov/.
  • Hayes, Wallace, and Claire L. Kruger, eds. 2014. "Hayes' Principles and Methods of Toxicology." 6th ed. CRC Press.
  • Lewis, Richard J. 2012. "Sax's Dangerous Properties of Industrial Materials." 12th ed. Wiley.
  • IARC. 2024. "Monographs on the Evaluation of Carcinogenic Risks to Humans." International Agency for Research on Cancer (per kryteria klasyfikacji rakotwórczości IARC Group 1/2A/2B).
  • Pohanish, Richard P. 2017. "Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens." 7th ed. Elsevier.
  • Bingham, Eula, Barbara Cohrssen, and Charles H. Powell, eds. 2012. "Patty's Toxicology." 6th ed. Wiley.
  • WHO. 2023. "Recommended Classification of Pesticides by Hazard." World Health Organization (zgodne z UN GHS Annex 1 §3.1.1).
⚠️ Interakcje lekowe (1)MolGod_DRUGINT_1

Znane interakcje farmakokinetyczne i farmakodynamiczne dla CAS 58-08-2 wg konsensusowych źródeł klinicznych. Niniejsze informacje są edukacyjne — nie zastępują konsultacji lekarskiej.

Skala evidence (Hansten & Horn)
A — randomized controlled trials · B — non-randomized clinical / PK studies · C — case reports · D — theoretical/mechanism-based
  • Teofilina
    UmiarkowaneEL: A
    CAS partnera: 58-55-9 · DrugBank DB00277 · PubChem 2153 · Papers: 8

    Mechanizm: Oba antagonizują receptory adenozynowe A1/A2A i hamują fosfodiesterazę (PDE3/4). Kofeina hamuje CYP1A2 i konkuruje o ten sam szlak metabolizmu co teofilina (demetylacja).

    Skutek kliniczny: Wzmożona stymulacja OUN, tachykardia, drżenia, bezsenność, ryzyko toksyczności teofiliny (drgawki, arytmie).

    Postępowanie: Ograniczyć kofeinę < 200 mg/d podczas terapii teofiliną. Monitorować stężenie teofiliny (terapeutyczne 5–15 μg/mL).

    Źródło: Stockley 2021; Indiana University P450 Table
Bibliografie (Chicago)
  • Hansten, Philip D., and John R. Horn. 2024. "The Top 100 Drug Interactions: A Guide to Patient Management." H&H Publications.
  • Stockley, Ivan H., ed. 2021. "Stockley's Drug Interactions." 12th ed. Pharmaceutical Press.
  • Indiana University. 2024. "P450 Drug Interaction Table." https://drug-interactions.medicine.iu.edu/.
  • Lexicomp. 2024. "Lexicomp Drug Interactions Database." Wolters Kluwer.
  • U.S. FDA. 2023. "Drug Development and Drug Interactions Table of Substrates, Inhibitors and Inducers." https://www.fda.gov/drugs/drug-interactions-labeling/drug-development-and-drug-interactions-table-substrates-inhibitors-and-inducers.
  • Goldfrank, Lewis R., et al. 2019. "Goldfrank's Toxicologic Emergencies." 11th ed. McGraw-Hill (rozdz. Drug Interactions — synergie + antagonizmy w zatruciach mieszanych).
  • Olson, Kent R., et al. 2018. "Poisoning & Drug Overdose." 7th ed. McGraw-Hill (kliniczne management interakcji w przedawkowaniu).
  • Dollery, Colin, ed. 1999. "Therapeutic Drugs." 2nd ed. Churchill Livingstone (monografia źródłowa o interakcjach lek-lek na poziomie farmakokinetyki).
  • Rosenstock, Linda, et al. 2005. "Textbook of Clinical Occupational and Environmental Medicine." 2nd ed. Elsevier Saunders (occupational + drug exposure interakcje).
  • Lippmann, Morton. 2009. "Environmental Toxicants: Human Exposures and Their Health Effects." 3rd ed. Wiley (modulacja CYP3A4/CYP2D6 przez ekspozycje środowiskowe).
  • Hayes, Wallace, and Claire L. Kruger, eds. 2014. "Hayes' Principles and Methods of Toxicology." 6th ed. CRC Press (in vitro screening DDI: rola P-gp, BCRP).
🧪 Klassieke syntheseroutes2 historyczne trasyMolGod_SYNTH_2

Historisch geverifieerde syntheseroutes. Citaten in Chicago author-date-stijl.

Route 1: Extraction from Camellia sinensis (tea leaves) (1820)
Uitgangsstoffen: Dried tea or coffee biomass; hot water then dichloromethane partition
Omstandigheden: Hot water decoction 95 C; CH2Cl2 liquid-liquid extraction; sublimation purification
Opbrengst: 3.5 %
Runge, Friedlieb Ferdinand. 1820. "Über einige neue Pflanzenstoffe." Annalen der Physik 65 (4): 449-462.
Route 2: Traube purine synthesis (1900)
Naamreactie: Traube purine synthesis
Uitgangsstoffen: Urea + cyanoacetic acid; methylation with dimethyl sulfate
Omstandigheden: Cyclization with formamide 180 C; sequential N-methylation in basic media
Opbrengst: 75.0 %
Traube, Wilhelm. 1900. "Der synthetische Aufbau der Harnsäure, des Xanthins, Theobromins, Theophyllins und Caffeins aus der Cyanessigsäure." Berichte der deutschen chemischen Gesellschaft 33 (3): 3035-3056.
Algemene bibliografie (Chicago):
  • March, Jerry, and Michael B. Smith. 2020. "March's Advanced Organic Chemistry: Reactions, Mechanisms, and Structure." 8th ed. Wiley.
  • Carey, Francis A., and Richard J. Sundberg. 2007. "Advanced Organic Chemistry, Part B: Reactions and Synthesis." 5th ed. Springer.
  • Corey, E. J., and Xue-Min Cheng. 1995. "The Logic of Chemical Synthesis." Wiley.
  • Greene, Theodora W., and Peter G. M. Wuts. 2014. "Greene's Protective Groups in Organic Synthesis." 5th ed. Wiley.
  • Smith, Michael B. 2020. "Organic Synthesis." 4th ed. Academic Press.
  • Carey, Francis A., and Richard J. Sundberg. 2007. "Advanced Organic Chemistry, Part A: Structure and Mechanisms." 5th ed. New York: Springer.
  • Anslyn, Eric V., and Dennis A. Dougherty. 2006. Modern Physical Organic Chemistry. Sausalito, CA: University Science Books.
  • Bretherick, Leslie. 1990. Bretherick's Handbook of Reactive Chemical Hazards. 4th ed. London: Butterworths.
  • Urben, Peter, ed. 2017. Bretherick's Handbook of Reactive Chemical Hazards. 8th ed. Oxford: Butterworth-Heinemann.
  • Yoshida, Tadao, Yusaku Iwata, Hiroshi Itoh, and Mitsuru Arai. 2009. Safe Storage of Reactive Chemicals. New York: Plenum Press.
  • Mortimer, Charles E. 2005. Chemistry: A Conceptual Approach. 9th ed. Belmont, CA: Wadsworth.
  • Engel, Thomas, and Philip Reid. 2013. Physical Chemistry. 3rd ed. Boston: Pearson.
  • Steinfeld, Jeffrey I., Joseph S. Francisco, and William L. Hase. 1998. Chemical Kinetics and Dynamics. 2nd ed. Upper Saddle River, NJ: Prentice Hall.
  • Houston, Paul L. 2001. Chemical Kinetics and Reaction Dynamics. New York: McGraw-Hill.
  • Eyring, Henry. 1935. "The Activated Complex in Chemical Reactions." Journal of Chemical Physics 3 (2): 107–115. https://doi.org/10.1063/1.1749604.
  • Kresge, A. Jerry. 2001. "Reaction kinetics in 100-year-old laboratories." Chemical Society Reviews 30 (4): 197–200. https://doi.org/10.1039/B100445F.
  • Brönsted, J. N. 1929. "Acid and Basic Catalysis." Chemical Reviews 5 (3): 231–338. https://doi.org/10.1021/cr60019a001.
  • Larock, Richard C. 2018. Comprehensive Organic Transformations: A Guide to Functional Group Preparations. 3rd ed. Hoboken, NJ: John Wiley & Sons.
  • Mundy, Bradford P., Michael G. Ellerd, and Frank G. Favaloro Jr. 2005. Name Reactions and Reagents in Organic Synthesis. 2nd ed. Hoboken, NJ: Wiley-Interscience.
  • Li, Jie Jack. 2014. Name Reactions: A Collection of Detailed Mechanisms and Synthetic Applications. 5th ed. Heidelberg: Springer.
  • Kürti, László, and Barbara Czakó. 2005. Strategic Applications of Named Reactions in Organic Synthesis. Burlington, MA: Elsevier Academic Press.
  • Trost, Barry M., and Ian Fleming, eds. 1991. Comprehensive Organic Synthesis: Selectivity, Strategy, and Efficiency in Modern Organic Chemistry. 9 vols. Oxford: Pergamon Press.
  • Ojima, Iwao, ed. 2010. Catalytic Asymmetric Synthesis. 3rd ed. Hoboken, NJ: John Wiley & Sons.
  • Jacobsen, Eric N., Andreas Pfaltz, and Hisashi Yamamoto, eds. 1999. Comprehensive Asymmetric Catalysis. 3 vols. Berlin: Springer.
  • Hartwig, John F. 2010. Organotransition Metal Chemistry: From Bonding to Catalysis. Sausalito, CA: University Science Books.
  • Crabtree, Robert H. 2014. The Organometallic Chemistry of the Transition Metals. 6th ed. Hoboken, NJ: John Wiley & Sons.
  • Negishi, Ei-ichi, ed. 2002. Handbook of Organopalladium Chemistry for Organic Synthesis. 2 vols. New York: Wiley-Interscience.
  • de Meijere, Armin, and François Diederich, eds. 2004. Metal-Catalyzed Cross-Coupling Reactions. 2nd ed. 2 vols. Weinheim: Wiley-VCH.
  • Berkessel, Albrecht, and Harald Gröger. 2005. Asymmetric Organocatalysis: From Biomimetic Concepts to Applications in Asymmetric Synthesis. Weinheim: Wiley-VCH.
  • Dalko, Peter I., ed. 2007. Enantioselective Organocatalysis: Reactions and Experimental Procedures. Weinheim: Wiley-VCH.
  • List, Benjamin, Richard A. Lerner, and Carlos F. Barbas III. 2000. "Proline-catalyzed direct asymmetric aldol reactions." Journal of the American Chemical Society 122 (10): 2395–2396. https://doi.org/10.1021/ja994280y.
  • MacMillan, David W. C. 2008. "The advent and development of organocatalysis." Nature 455 (7211): 304–308. https://doi.org/10.1038/nature07367.
  • Noyori, Ryōji. 2002. "Asymmetric catalysis: science and opportunities (Nobel lecture)." Angewandte Chemie International Edition 41 (12): 2008–2022. https://doi.org/10.1002/1521-3773(20020617)41:12<2008::AID-ANIE2008>3.0.CO;2-4.
  • Sharpless, K. Barry. 2002. "Searching for new reactivity (Nobel lecture)." Angewandte Chemie International Edition 41 (12): 2024–2032. https://doi.org/10.1002/1521-3773(20020617)41:12<2024::AID-ANIE2024>3.0.CO;2-O.
  • Knowles, William S. 2002. "Asymmetric hydrogenations (Nobel lecture)." Angewandte Chemie International Edition 41 (12): 1998–2007. https://doi.org/10.1002/1521-3773(20020617)41:12<1998::AID-ANIE1998>3.0.CO;2-8.
  • Grubbs, Robert H. 2006. "Olefin-metathesis catalysts for the preparation of molecules and materials (Nobel lecture)." Angewandte Chemie International Edition 45 (23): 3760–3765. https://doi.org/10.1002/anie.200600680.
  • Schrock, Richard R. 2006. "Multiple metal-carbon bonds for catalytic metathesis reactions (Nobel lecture)." Angewandte Chemie International Edition 45 (23): 3748–3759. https://doi.org/10.1002/anie.200600085.
  • Suzuki, Akira. 2011. "Cross-coupling reactions of organoboranes: an easy way to construct C-C bonds (Nobel lecture)." Angewandte Chemie International Edition 50 (30): 6722–6737. https://doi.org/10.1002/anie.201101379.
  • Negishi, Ei-ichi. 2011. "Magical power of transition metals: past, present, and future (Nobel lecture)." Angewandte Chemie International Edition 50 (30): 6738–6764. https://doi.org/10.1002/anie.201101380.
  • List, Benjamin, and David W. C. MacMillan. 2022. "Asymmetric organocatalysis (Nobel lecture)." Angewandte Chemie International Edition 61 (38): e202205927. https://doi.org/10.1002/anie.202205927.
  • Bertozzi, Carolyn R., Morten Meldal, and K. Barry Sharpless. 2023. "Click chemistry and bioorthogonal chemistry (Nobel lectures)." Angewandte Chemie International Edition 62 (16): e202300332. https://doi.org/10.1002/anie.202300332.
  • Weissermel, Klaus, and Hans-Jürgen Arpe. 2003. Industrial Organic Chemistry. 4th ed. Weinheim: Wiley-VCH.
  • Wittcoff, Harold A., Bryan G. Reuben, and Jeffrey S. Plotkin. 2013. Industrial Organic Chemicals. 3rd ed. Hoboken, NJ: John Wiley & Sons.
  • Appl, Max. 2006. "Ammonia, 2. Production Processes." In Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. https://doi.org/10.1002/14356007.o02_o11.
  • Thiemann, Michael, Erich Scheibler, and Karl Wilhelm Wiegand. 2000. "Nitric Acid, Nitrous Acid, and Nitrogen Oxides." In Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. https://doi.org/10.1002/14356007.a17_293.
  • Hocking, Martin B. 2005. Handbook of Chemical Technology and Pollution Control. 3rd ed. Burlington, MA: Academic Press.
  • Corey, E. J., and László Kürti. 2010. Enantioselective Chemical Synthesis: Methods, Logic, and Practice. Direct Book Publishing.
  • Nicolaou, K. C., and E. J. Sorensen. 1996. Classics in Total Synthesis: Targets, Strategies, Methods. Weinheim: VCH.
  • Nicolaou, K. C., and Jason S. Chen. 2011. Classics in Total Synthesis III: Further Targets, Strategies, Methods. Weinheim: Wiley-VCH.
  • House, Herbert O. 1972. Modern Synthetic Reactions. 2nd ed. Menlo Park, CA: W. A. Benjamin.
  • Organic Syntheses, Inc. 2024. "Organic Syntheses Collective Volumes 1–10 (1932–2004) and Annual Volumes 1–100 (1922–2024)." Hoboken, NJ: Wiley. https://www.orgsyn.org/.
  • Paquette, Leo A., David Crich, Philip L. Fuchs, Gary A. Molander, and Andre B. Charette, eds. 2009. Encyclopedia of Reagents for Organic Synthesis (e-EROS). 2nd ed. Hoboken, NJ: Wiley. https://onlinelibrary.wiley.com/doi/book/10.1002/047084289X.
Uitgebreide bibliografie — 4 bronnen (PubMed/CrossRef/EuropePMC)
  • PUBMansouri RA; Aboubakr EM; Alshaibi HF; Fouda WM; Banjabi AA; Al-Bazi MM. 2026. "Calcium Carbonate-Stabilized Nano-Caffeine Emulsion Attenuates Diabetic Cardiomyopathy via Antioxidant, Anti-Inflammatory, and Anti-Fibrotic Pathways in Type 2 Diabetic Rats with HPLC-Quantified Cardiac Caffeine Levels." International journal of nanomedicine. https://doi.org/10.2147/IJN.S573949.
  • PUBHategekimana F; Elçin AE; Elçin YM. 2026. "Green synthesis of caffeine-catalyzed citric acid-PPG/PEG crosslinked alginate hydrogel scaffolds for prospective biomedical applications." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151850.
  • EURBecerra-Lovera A, Anaya-Mancipe J, Díaz-Martin R, Dias M, Souza D.. 2026. "Eugenol-Based Epoxy Vitrimers: Caffeine and Zinc Acetate as Potential Alternative Catalysts in Curing Kinetics and Dynamic Network Properties." .
  • EURBaral AK, Talukdar M, Singh S.. 2025. "Thermo-acoustic investigation on mixtures of Tetramethyl ammonium hydroxide and caffeine in aqueous medium with the goal to understand their mutual interactions." . https://doi.org/10.1186/s13065-025-01684-y.
💎 Kristalvormen / polymorfen 3 formy w bazie MolGod_POLYMORPH_2
Vorm Ruimtegroep Cel (Å, °) Dichtheid (g/cm³) Smp. (°C) CCDC
alpha (anhydrous) stabiel R-3c a=14.95 b=14.95 c=6.958 · α=90 β=90 γ=120 · Z=6 1.454 236.0 NIWFEE DOI
beta (monohydrate) P21/n a=14.878 b=16.718 c=3.97 · α=90 β=97.04 γ=90 · Z=4 1.425 178.0 CAFINE DOI
beta-anhydrous (high-T) P21/c a=14.942 b=6.955 c=14.652 · α=90 β=96.18 γ=90 · Z=8 1.450 235.0 NIWFEE01 DOI

Bron: Cambridge Structural Database (CSD) + primaire literatuur. Polymorfie beïnvloedt oplosbaarheid, biobeschikbaarheid en stabiliteit (Brittain 2009; Bernstein 2020).

Uitgebreide bibliografie — 6 bronnen (PubMed/CrossRef/EuropePMC)
  • PUBDos Santos ARP; Lima BCS; Couto GJ; Carvalho L; Magna LR; Nogueira MH. 2025. "Antibiofilm effect of caffeine against Listeria monocytogenes and Escherichia coli in grape and apple fruit juices." Biofouling. https://doi.org/10.1080/08927014.2025.2515923.
  • PUBVignale FA; Hernandez Garcia A; Modenutti CP; Sosa EJ; Defelipe LA; Oliveira R. 2025. "Yerba mate (Ilex paraguariensis) genome provides new insights into convergent evolution of caffeine biosynthesis." eLife. https://doi.org/10.7554/eLife.104759.
  • PUBTan BJ; Xiao B; Tan EK. 2024. "Elevated neutrophils and uncontrolled asthma: the effects of caffeine, diet and co-morbidities." The Journal of asthma : official journal of the Association for the Care of Asthma. https://doi.org/10.1080/02770903.2024.2332924.
  • PUBLatunra AI; Heryanto H; Tahir D; Ardiansa A. 2024. "Analytical insight into caffeine extraction from typica coffee leaves based on crystallinity enhancement, optical phonon vibration upshift, and morphological evolution." Journal of food science. https://doi.org/10.1111/1750-3841.17443.
  • EURSuenaga S, Kataoka H, Hasegawa K, Koga R, Tsunoda C, Kuwashima W, Tsuchida T, Goto S.. 2024. "How Does the Powder Mixture of Ibuprofen and Caffeine Attenuate the Solubility of Ibuprofen? Comparative Study for the Xanthine Derivatives to Recognize Their Intermolecular Interactions Using Fourier-Transform Infrared (FTIR) Spectra, Differential Scanning Calorimetry (DSC), and X-ray Powder Diffractometry (XRPD)." . https://doi.org/10.1021/acs.molpharmaceut.4c00429.
  • PUBRahimi MR; Semenova EA; Larin AK; Kulemin NA; Generozov EV; Łubkowska B. 2023. "The ADORA2A TT Genotype Is Associated with Anti-Inflammatory Effects of Caffeine in Response to Resistance Exercise and Habitual Coffee Intake." Nutrients. https://doi.org/10.3390/nu15071634.
📚 Wetenschappelijke referenties (Chicago Author-Date)
  1. Mansouri RA; Aboubakr EM; Alshaibi HF; Fouda WM; Banjabi AA; Al-Bazi MM. 2026. "Calcium Carbonate-Stabilized Nano-Caffeine Emulsion Attenuates Diabetic Cardiomyopathy via Antioxidant, Anti-Inflammatory, and Anti-Fibrotic Pathways in Type 2 Diabetic Rats with HPLC-Quantified Cardiac Caffeine Levels." International journal of nanomedicine. https://doi.org/10.2147/IJN.S573949. [DOI]
  2. Hategekimana F; Elçin AE; Elçin YM. 2026. "Green synthesis of caffeine-catalyzed citric acid-PPG/PEG crosslinked alginate hydrogel scaffolds for prospective biomedical applications." International journal of biological macromolecules. https://doi.org/10.1016/j.ijbiomac.2026.151850. [DOI]
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📚 REFERENTIES (Verzamelde bibliografie, Chicago Author-Date) 132 items

Alle wetenschappelijke bronnen die in de accordeons hierboven voor CAS 58-08-2 worden geciteerd.Formaat: Chicago Manual of Style 17e ed., Author-Date-systeem.

🗄️ Wetenschappelijke databanken

  1. NIST. n.d. NIST Chemistry WebBook: CAS 58-08-2. Gaithersburg, MD: National Institute of Standards and Technology. https://webbook.nist.gov/cgi/cbook.cgi?ID=58-08-2.
  2. AIST. n.d. Spectral Database for Organic Compounds (SDBS): CAS 58-08-2. Tsukuba, Japan: National Institute of Advanced Industrial Science and Technology. https://sdbs.db.aist.go.jp/.
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📐 Standaarden / Richtlijnen

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  7. European Committee for Standardization (CEN). 2009. "EN 14605:2005+A1:2009 — Protective clothing against liquid chemicals — Performance requirements for clothing with liquid-tight (Type 3) or spray-tight (Type 4) connections." CEN, Brussels. https://standards.cencenelec.eu/dyn/www/f?p=CEN:110:0::::FSP_PROJECT:21581&cs=1A04A2D3C7CC58E9E6CB58D55F7EBFB7E.
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📖 Boeken

  1. O'Neil, Maryadele J., ed. 2013. The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals, 15th ed.. Cambridge: Royal Society of Chemistry.
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📘 Monografieën

  1. IARC. n.d. IARC Monographs on the Identification of Carcinogenic Hazards to Humans: CAS 58-08-2. Lyon, France: International Agency for Research on Cancer, World Health Organization.

📄 Wetenschappelijke artikelen (peer-reviewed)

  1. Stefanis, Emmanuel, and Costas Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." International Journal of Thermophysics 29: 568-585. https://doi.org/10.1007/s10765-008-0415-z.
  2. Stoll, Vincent S., and John S. Blanchard. 1990. "Buffers: Principles and Practice: In Methods in Enzymology, vol. 182." San Diego: Academic Press. https://doi.org/10.1016/0076-6879(90)82008-P.

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