Dydrogesterone Impurity 7 CAS 19592-55-3
| CAS No. | 19592-55-3 |
| Molecular Formula | C25H36O4 |
| Molecular Weight | 400.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Dydrogesterone Impurity 7 (C25H36O4) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 400.55 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a process- or degradation-related impurity, Dydrogesterone Impurity 7 (CAS 19592-55-3, C25H36O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Dydrogesterone Impurity 7 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C25H36O4 |
| Molecular Weight | 400.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, 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.) | 1962 |
Related Dydrogesterone Standards
- Dydrogesterone Impurity 11 (CAS CATO-C4X-218311)
- Dydrogesterone Impurity 15 (CAS 32164-74-2)
- Dydrogesterone Impurity 16 (CAS 151478-10-3)
- Dydrogesterone Impurity 5 (CAS 5488-51-7)
- Dydrogesterone Impurity 9 (CAS 99958-08-4)
- Dydrogesterone Impurity 21 (CAS CATO-C4X-218321)
- Dydrogesterone Impurity 24 (CAS CATO-C4X-218324)
- Dydrogesterone Impurity 17 (CAS 71379-22-1)
Recommended Standards
- Mirogabalin Impurity 10 (CAS CATO-C4X-292410)
- Mirogabalin Impurity 28 (CAS CATO-C4X-292428)
- Mirogabalin Impurity 39 (CAS CATO-C4X-292439)
- Simvastatin EP Impurity C (CAS 210980-68-0)
- Tedizolid Impurity 52 (CAS 2095200-68-1)
- Fexofenadine EP Impurity A (CAS 76811-98-8)
- Rifaximin Impurity 12 (CAS CATO-C4X-150512)
- 2-(4-Ethylphenoxy)-N-(4-fluoro-3-nitrophenyl)acetamide (CAS 425613-09-8)
- (R)-2,3,4,9-TETRAHYDRO-1H-PYRIDO[3,4-B]INDOLE-3-CARBOXAMIDE (CAS 89013-95-6)
- (3-Propylpyridin-4-yl)boronic acid (CAS 2225171-70-8)
- (1S,3S,4R)-4-((3aS,4R,5S,7aS)-4-(Aminomethyl)-7a-methyl-1-methyleneoctahydro-1H-inden-5-yl)-3-(hydroxymethyl)-4-methylcyclohexanol acetate (CAS 782487-29-0)
- (+)-O-Desmethyltramadol (CAS 144830-14-8)
- 4-(3-(Trifluoromethyl)phenoxy)butanoic acid (CAS 87411-31-2)
- Prolactin-Releasing Peptide (1-31) (rat) (CAS 215510-06-8)
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