Vitamin A CAS 68-26-8
| CAS No. | 68-26-8 |
| Molecular Formula | C20H30O |
| Molecular Weight | 286.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Vitamin A (C20H30O) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Vitamin A (CAS 68-26-8), molecular formula C20H30O and molecular weight 286.45 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H30O |
| Molecular Weight | 286.45 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Vitamin Standards
- Vitamin A EP Impurity C（Mixture of Z and E Isomers） (CAS 16729-22-9 ((3E)-Isomer))
- Vitamin A (CAS 11103-57-4)
- Vitamin A Impurity 29 (CAS CATO-C4X-218729)
- Vitamin B1 Impurity 14 (CAS CATO-C4X-187314)
- Vitamin K1 Impurity 63 (CAS CATO-C4X-220763)
- VITAMIN A (12,13, 20-13C3) (CAS CATO-C4X-21875)
- Vitamin impurity 55 (CAS 38987-92-7)
- Vitamin K1 Impurity 52 (CAS CATO-C4X-220752)
Recommended Standards
- 9-cis-Retinol (CAS 22737-97-9)
- 13-cis-Retinol (CAS 2052-63-3)
- 3-Hydroxyhexadecanoic Acid Methyl Ester (CAS 51883-36-4)
- Totarol (CAS 511-15-9)
- n-Methyl-1h-pyrrol-1-amine (CAS 110955-69-6)
- Copper, [4,4′-bis(1,1-dimethylethyl)-2,2′-bipyridine-κN1,κN1′]dichloro-, (SP-4-2)- (CAS 1264222-51-6)
- 5-Cyclopropoxy-2-fluoro-N,N-dimethylisonicotinamide (CAS 1243479-43-7)
- Ethyl 2-(3-fluoro-5-methylpyridin-4-yl)acetate (CAS 1393562-38-3)
- 4-methoxy-2,3-dihydro-1H-indole (CAS 7555-94-4)
- Carboxymethyl-β-Cyclodextrin (CAS 218269-34-2)
- 4-Detrifluoroethoxy-4-methylsulfonyl Lansoprazole Sulfone (CAS 1648891-88-6)
- 4-Chloro-2-cyclopropyl-6-methylpyrimidine (CAS 7043-11-0)
- 1-(7-Methoxynaphthalen-1-yl)piperazine (CAS 120991-78-8)
- Semaglutide Impurity 161 (x TFA Salt) (CAS CATO-C4X-2226161)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com