Eplerenone EP Impurity C CAS 95716-70-4
| CAS No. | 95716-70-4 |
| Molecular Formula | C24H30O5 |
| Molecular Weight | 398.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Eplerenone EP Impurity C is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Eplerenone EP Impurity C (CAS 95716-70-4) is a certified pharmaceutical impurity reference standard with the molecular formula C24H30O5 and a molecular weight of 398.49 g/mol.
Eplerenone EP Impurity C (C24H30O5) contains a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C24H30O5 |
| Molecular Weight | 398.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
Related Eplerenone Standards
- Eplerenone Impurity 11 (CAS 192704-70-4)
- Eplerenone EP Impurity D (CAS 209253-82-7)
- Eplerenone EP Impurity G (CAS 41020-65-9)
- Eplerenone Impurity 23 (CAS CATO-C4X-163023)
- Eplerenone Impurity 39 (CAS CATO-C4X-163039)
- Eplerenone Impurity N1 (CAS 209253-72-5)
- Eplerenone Impurity 43 (CAS CATO-C4X-163043)
- Eplerenone EP Impurity A (CAS CATO-C4X-16301)
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