Dydrogesterone Impurity 4 CAS 4243-74-7
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 4243-74-7 |
| Molecular Formula | C21H30O2 |
| Molecular Weight | 314.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Dydrogesterone Impurity 4 (CAS 4243-74-7) pharmacopoeial impurity standards reference standard. Molecular formula: C21H30O2. Molecular weight: 314.46 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C21H30O2 |
| Molecular Weight | 314.46 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Dydrogesterone Standards
- Dydrogesterone Impurity 1 (CAS 1819-14-3)
- Dydrogesterone Impurity N3 (CAS 25093-47-4)
- Dydrogesterone Impurity 12; (CAS 17398-60-6)
- Dydrogesterone (CAS 152-62-5)
- Dydrogesterone EP Impurity C (CAS 246038-13-1)
- Dydrogesterone EP Impurity B (CAS CATO-C4X-218313)
- Dydrogesterone Impurity 23 (CAS CATO-C4X-218323)
- Dydrogesterone Impurity 8 (CAS CATO-C4X-21838)
Recommended Standards
- Levonorgestrel Impurity 29 (CAS CATO-C4X-167729)
- 20β-Dihydrodydrogesterone (CAS 4243-73-6)
- 5-alfa-Dihydrolevonorgestrel (CAS 78088-19-4)
- Bumetanide Impurity 10 (CAS CATO-C4X-198610)
- Nabumetone EP Impurity B (CAS 343272-51-5)
- (E)-4-(3-(4-Bromophenyl)-3-oxoprop-1-en-1-yl)benzoic acid (CAS 1644526-89-5)
- Sulpiride Impurity 24 (CAS CATO-C4X-187624)
- 3-Bromo-5-methoxy-2-[2-(4-methoxyphenyl)-2-oxoethoxy]benzaldehyde (CAS 477858-36-9)
- Ethyl 2-{[(dimethylamino)methylidene]amino}-4-phenylthiophene-3-carboxylate (CAS 304685-95-8)
- Liraglutide(5-31)TFA Salt (CAS CATO-C4X-19924)
Why CATO?
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