3,17-Dioxo-19-carboxy-androst-4-ene CAS 4757-95-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 4757-95-3 |
| Molecular Formula | C19H24O4 |
| Molecular Weight | 316.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,17-Dioxo-19-carboxy-androst-4-ene (CAS 4757-95-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C19H24O4. Molecular weight: 316.39 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C19H24O4 |
| Molecular Weight | 316.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
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Recommended Standards
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- Metolazone EP Impurity D (CAS 4015-23-0)
- 5-Chloro-1H-pyrrolo[2,3-b]pyridin-4-amine (CAS 1040683-00-8)
- methyl 2-chloro-1H-pyrrole-3-carboxylate (CAS 126480-98-6)
- 3-Butyl-5,7a-dihydroisobenzofuran-1(4H)-one (CAS 141120-37-8)
- 8-Cyclohexyl-5,6-dihydro-4H-pyrazino[3,2,1-jk]-carbazole (CAS 157056-89-8)
- tert-Butyl-d9 Alcohol (CAS 25725-11-5)
- Semaglutide impurity 65 (CAS CATO-C4X-222665)
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