Cholecalciferol EP Impurity B CAS 434-16-2
Purity >95.0%In StockPharmacopoeial Impurity Standards
| CAS No. | 434-16-2 |
| Molecular Formula | C27H44O |
| Molecular Weight | 384.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Cholecalciferol EP Impurity B (CAS 434-16-2) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C27H44O. Molecular weight: 384.64 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C27H44O |
| Molecular Weight | 384.64 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95.0% |
| 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 Cholecalciferol Standards
- trans-Cholecalciferol (CAS 1260149-80-1)
- Cholecalciferol EP Impurity A (CAS 22350-41-0)
- Cholecalciferol Impurity 15 (CAS 42607-12-5)
- Cholecalciferol EP Impurity C (CAS 5226-01-7)
- Cholecalciferol EP Impurity D (CAS 22350-43-2)
- Cholecalciferol EP Impurity E (CAS 17592-07-3)
- Cholecalciferol-d6 (Vitamin D3-d6) (CAS 118584-54-6)
- Cholecalciferol Impurity 26 (CAS CATO-C4X-158626)
Recommended Standards
- Vitamin D3 Impurity 4 (CAS 573951-39-0)
- Ethyl 2-(5,6-dichloro-2-(2-chloropyridin-3-yl)-1H-benzo[d]imidazol-1-yl)acetate (CAS 337920-66-8)
- Precalciferol (Previtamin D3) (CAS 1173-13-3)
- Travoprost Impurity 22 (CAS CATO-C4X-192522)
- Darunavir Impurity 14 (CAS CATO-C4X-160614)
- 4-[(E)-2-(Phenylmethylidene)hydrazin-1-yl]quinazoline (CAS 1429220-46-1)
- N-(5-Chloro-2-fluorobenzyl)piperidin-4-amine dihydrochloride (CAS 1349716-53-5)
- 2-Amino-5-bromo-3-methylbenzoic acid, 97% (CAS 206548-13-2)
- 5-(Difluoromethyl)nicotinamide (CAS 1713602-57-3)
- Tirzepatide Impurity 47 (CAS CATO-C4X-324047)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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