Clobetasone Butyrate EP Impurity D CAS 639817-51-9
Purity ≥95%In StockPharmacopoeial Impurity Standards
| CAS No. | 639817-51-9 |
| Molecular Formula | C26H31BrClFO5 |
| Molecular Weight | 557.88 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Clobetasone Butyrate EP Impurity D (CAS 639817-51-9) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C26H31BrClFO5. Molecular weight: 557.88 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C26H31BrClFO5 |
| Molecular Weight | 557.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | ≥95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | F/Cl/Br-containing |
Related Clobetasone Standards
- Clobetasone Butyrate Impurity 7 (CAS CATO-C4X-35397)
- Clobetasone butyrate EP Impurity G (CAS CATO-C4X-35394)
- Clobetasone butyrate EP Impurity E (CAS 639817-48-4)
- Clobetasone butyrate EP Impurity C (CAS 639817-49-5)
- Clobetasone Butyrate EP Impurity I (CAS 639817-47-3)
- Clobetasone Butyrate EP Impurity F (CAS 25120-98-3)
- Clobetasone 17-Butyrate (CAS 25122-57-0)
- Clobetasone Butyrate EP Impurity H (CAS 25122-56-9)
Recommended Standards
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- 3-[1-(4-Aminobutyl)-1H-1,2,3-triazol-4-yl]aniline (CAS 1626413-52-2)
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