β-Carotene
SIGMA/C4582 - synthetic, ≥95% (HPLC), crystalline
Synonym: β,β-Carotene; Provitamin A
CAS Number: 7235-40-7
Empirical Formula (Hill Notation): C40H56
Molecular Weight: 536.87
EC Number: 230-636-6
MDL Number: MFCD00001556
Linear Formula: C40H56
Product Type: Chemical
Representative of vacuum-sealed clear ampule packaging. Non-uniform tips are an inherent feature in this sealing process.
| 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.) | |
| assay | ≥95% (HPLC) |
| biological source | synthetic |
| color | dark red-purple to red-brown |
| form | crystalline |
| impurities | α-carotene, essentially free |
| InChI | 1S/C40H56/c1-31(19-13-21- |
| InChI key | OENHQHLEOONYIE-JLTXGRSLSA |
| mp | 178-179 °C |
| Quality Level | 200  |
| SMILES string | CC1=C(/C=C/C(C)=C/C=C/C(C |
| solubility | DMSO: 30 μg/mL |
| H2O: insoluble | |
| hexane: soluble 100 μg/mL | |
| storage temp. | −20°C |
| 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: | The most important of the provitamins A, β-carotene can be classified as an antioxidant due to its inhibition of radical initiated peroxidation in vitro. However, in vivo it appears to act either as an antioxidant or a prooxidant depending on cellular environment. It reduces the incidence of many cancers, but enhances lung cancer incidence in smokers. |
| Biochem/physiol Actions: | The most important of the provitamins A. |
| Biochem/physiol Actions: | 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. |
| Packaging: | 5, 10, 25 mg in ampule |
| Risk Statements | 44 |
| Safety Statements | 7-15-18 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | 217.9 °F - closed cup |
| Flash Point(C) | 103.3 °C - closed cup |
| Purity | ≥95% (HPLC) |
| mp | 178-179 °C |
| Storage Temp. | −20°C |
| UNSPSC | 12352212 |