Betacarotene EP Impurity A CAS 1638-05-7
| CAS No. | 1638-05-7 |
| Molecular Formula | C25H34O |
| Molecular Weight | 350.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Betacarotene EP Impurity A is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Betacarotene EP Impurity A (CAS 1638-05-7, C25H34O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Betacarotene EP Impurity A (C25H34O) 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Betacarotene EP Impurity A under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C25H34O |
| Molecular Weight | 350.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Betacarotene Standards
- Betacarotene impurity 8 (CAS CATO-C4X-28158)
- Betacarotene impurity 10 (CAS CATO-C4X-281510)
- Betacarotene impurity 11 (CAS CATO-C4X-281511)
- Betacarotene impurity 9 (CAS 3917-41-7)
- Betacarotene EP Impurity B (CAS 472-93-5)
- Betacarotene EP Impurity C (CAS CATO-C4X-28153)
- Betacarotene EP Impurity D (CAS 13312-52-2)
- Betacarotene EP Impurity E (CAS 6811-73-0)
Recommended Standards
- 3,4-Dimethyl-5-propyl-2-furantridecanoic acid (CAS 69662-69-7)
- 3-Allyl-6-(3-((tert-butyldimethylsilyloxy)methyl)-pyrrolidin-1-yl)-2-fluoropyridine (CAS 1228665-48-2)
- ethyl 9-(3,4-dimethyl-5-pentylfuran-2-yl)nonanoate (CAS CATO-C4X-280630)
- 2,2'-(1,3-Propanediyl)bis[1-methyl-1H-benzimidazol-5-amine (CAS 847588-86-7)
- Rivaroxaban Impurity 79 (CAS 2097255-05-3)
- Lovastatin Impurity 29 (CAS CATO-C4X-168429)
- Belumosudil Impurity 19 (CAS CATO-C4X-298819)
- Morpholine-4-carboxylic acid (CAS 50881-96-4 (free base))
- 2-(5-(((4-Chlorophenyl)amino)methyl)-4H-1,2,4-triazol-3-yl)acetic acid (CAS 1087648-35-8)
- 1-(Bromomethyl)-2-(phenylsulfonyl)benzene (CAS 105510-34-7)
- Ethyl 5-(sec-butyl)-1,2,4-oxadiazole-3-carboxylate (CAS 1342414-83-8)
- 2-(Furan-2-ylmethyl)-1-oxo-1,2,3,6,7,7a-hexahydro-3a,6-epoxyisoindole-7-carboxylic acid (CAS 1164538-88-8)
- 2,2'-Dihydroxydiphenylmethane (CAS 2467-02-9)
- Neuropeptide K, porcine (CAS 106441-70-7)
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