Calcitriol impurity 39 CAS 161885-78-5
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 161885-78-5 |
| Molecular Formula | C38H68O4Si2 |
| Molecular Weight | 645.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Calcitriol impurity 39 (CAS 161885-78-5), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C38H68O4Si2. Molecular weight: 645.12 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C38H68O4Si2 |
| Molecular Weight | 645.12 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
Related Calcitriol Standards
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Recommended Standards
- 26,27-Didesmethyl-1,3-(tert-butyldimethylsilyl) (5Z)-Calcitriol 24-Carboxylic Acid Methyl Ester (CAS 145372-43-6)
- Lapaquistat Acetate (CAS 189060-13-7)
- N-(4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-Heptadecafluoroundecyl)-2-iodoacetamide (CAS 852527-48-1)
- Trifluridine Impurity 7 (CAS CATO-C4X-20567)
- Opicapone impurity 38 (CAS CATO-C4X-240438)
- N-Ethyl-N-(2-hydroxyethyl)-4-piperidinecarboxamide hydrochloride (CAS 1220033-57-7)
- 2-((3-Fluoro-4-methylphenyl)amino)-2-oxoethyl 5-methylthiophene-2-carboxylate (CAS 848372-89-4)
- (1s,3r)-3-Amino-2,2-dimethylcyclobutane-1-carboxylic acid hydrochloride (CAS 1476780-44-5)
- 2-Methylbenzylmagnesium chloride (CAS 29875-05-6)
- Semaglutide impurity 98 (CAS CATO-C4X-222698)
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 13829788188 / jacky.chen@cato-chem.com