24,24-Difluoro-25-Hydroxyvitamin D3 CAS 71603-41-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 71603-41-3 |
| Molecular Formula | C27H42F2O2 |
| Molecular Weight | 436.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
24,24-Difluoro-25-Hydroxyvitamin D3 (CAS 71603-41-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C27H42F2O2. Molecular weight: 436.62 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C27H42F2O2 |
| Molecular Weight | 436.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | F-containing |
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Recommended Standards
- 3β,7α,12α-Trihydroxy-5β-cholanic Acid Methyl Ester (CAS 28050-54-6)
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- Cholic Acid Ethyl Ester (CAS 47676-48-2)
- 5-Chloro-2-methoxy-7-vinylquinoxaline (CAS 2173069-37-7)
- 4-(3-Pyrrolidinylmethyl)morpholine dihydrochloride (CAS 1220033-16-8)
- N-allyl-4-chloro-N-phenylbenzenesulfonamide (CAS 2514-66-1)
- 2-(Difluoromethyl)-5-methoxy-3-methyl-1H-indole (CAS 2149590-55-4)
- Bis[di-tert-butyl(4-dimethylaminophenyl)phosphine]palladium(0) (CAS 1233717-68-4)
- 5,5,6,6,7,7,8,8,9,9,10,10,10-Tridecafluorodecyl acrylate (CAS 451456-30-7)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
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