C4582

β-Carotin

synthetic, ≥95% (HPLC), Vitamin A precursor, crystalline

• Synonym(e): β,β-Carotin, Provitamin A
• Empirische Formel (Hill-System): C₄₀H₅₆
• CAS-Nummer: 7235-40-7
• Molekulargewicht: 536.87
• NACRES: NA.77
• PubChem Substance ID: 24892702
• UNSPSC Code: 12352212
• EC Number: 230-636-6
• MDL number: MFCD00001556
• Beilstein/REAXYS Number: 1917416

Eigenschaften

• Produktname: β-Carotin, synthetic, ≥95% (HPLC), crystalline
• biological source: synthetic
• Quality Segment: 200
• assay: ≥95% (HPLC)
• form: crystalline
• impurities: α-carotene, essentially free
• color: dark red-purple to red-brown
• mp: 178-179 °C
• solubility: hexane: soluble 100 μg/mL, DMSO: 30 μg/mL, H₂O: insoluble
• ε (extinction coefficient): 2160-2280 at 478-479 nm in hexane at 1% (vs. 2280, lit.), 2450-2590 at 450-452 nm in hexane at 1% (vs. 2590, lit.)
• storage temp.: −20°C
• SMILES string: CC1=C(/C=C/C(C)=C/C=C/C(C)=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C2=C(C)CCCC2(C)C)C(C)(C)CCC1
• InChI: 1S/C40H56/c1-31(19-13-21-33(3)25-27-37-35(5)23-15-29-39(37,7)8)17-11-12-18-32(2)20-14-22-34(4)26-28-38-36(6)24-16-30-40(38,9)10/h11-14,17-22,25-28H,15-16,23-24,29-30H2,1-10H3/b12-11+,19-13+,20-14+,27-25+,28-26+,31-17+,32-18+,33-21+,34-22+
• InChI key: OENHQHLEOONYIE-JLTXGRSLSA-N

Beschreibung

Application

β-Carotene has been used:

• as standard for quantification of b-carotene using HPLC analysis
• as a standard for the identification and quantification of authentic standards for carotenoid groups
• for standard curve preparation in the measurement of β-carotene production
• for standard curve preparation in nutritive assays

Biochem/physiol Actions

β-Carotin ist das wichtigste der Provitamine A und kann aufgrund seiner in vitro hemmenden Wirkung auf die von Radikalen initiierte Peroxidierung als Antioxidans klassifiziert werden. In vivo scheint es jedoch je nach zellulärer Umgebung entweder als Anti- oder als Prooxidans zu agieren. Es reduziert die Inzidenz vieler Krebsarten, erhöht aber die Inzidenz von Lungenkrebs bei Rauchern.

Das wichtigste der Provitamine A.

β-Carotene (pro-vitamin A) is a member of carotenoids. This antioxidant plays a vital role in human physiology. β-Carotene is an abundant carotenoid. It is considered as a precursor of vitamin A, which is a lipid soluble antioxidant with vitamin E properties.

Disclaimer

Purchase minimum quantity required. Discard one month after opening.

Sicherheitshinweise

• Lagerklasse: 11 - Combustible Solids
• WGK: WGK 1
• Flammpunkt (°F): 217.9 °F - closed cup
• Flammpunkt (°C): 103.3 °C - closed cup
• PSA (Persönliche Schutzausrüstung): Eyeshields, Gloves