Methylprednisolone Impurity 62 CAS 95810-22-3
| CAS No. | 95810-22-3 |
| Molecular Formula | C22H28O5 |
| Molecular Weight | 372.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methylprednisolone Impurity 62 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.
As a process- or degradation-related impurity, Methylprednisolone Impurity 62 (CAS 95810-22-3, C22H28O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Methylprednisolone Impurity 62 (C22H28O5) 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.
Physical & Chemical Properties
| Molecular Formula | C22H28O5 |
| Molecular Weight | 372.45 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
Related Methylprednisolone Standards
- Methylprednisolone Acetate EP Impurity C (CAS 58636-50-3)
- Methylprednisolone EP Impurity A (CAS 91523-05-6)
- Methylprednisolone Impurity 70 (CAS CATO-C4X-191970)
- Methylprednisolone Impurity 37 (CAS 1746-38-9)
- Methylprednisolone EP Impurity H (CAS 18462-27-6)
- Methylprednisolone impurity 82 (CAS 106502-98-1)
- Methylprednisolone impurity 87 (CAS 105500-05-8)
- 6-Alpha-Methylprednisolone (CAS 83-43-2)
Recommended Standards
- Ulipristal Impurity 14 (CAS CATO-C4X-191514)
- 7-TMCA Impurity 3 (CAS CATO-C4X-23183)
- Beclometasone Impurity 39 (CAS CATO-C4X-147439)
- Meprednisone (CAS 1247-42-3)
- Hesperidin Impurity 2 (CAS CATO-C4X-33272)
- Peramivir Impurity 1 (CAS 1170354-97-8)
- Everolimus Impurity 30 (CAS CATO-C4X-112230)
- 3-Nitro-1H-pyrrolo[2,3-b]pyridine-5-carbonitrile (CAS 1190322-60-1)
- Methyl 3-(tert-butyl)-2,3-dimethyloxirane-2-carboxylate (CAS 1517593-09-7)
- (R)-3-(5-(benzyloxy)-1H-indol-3-yl)-2-((tert-butoxycarbonyl)amino)propanoic acid (CAS 361576-58-1)
- 2-(Difluoromethyl)-5-hydroxy-4-nitropyridine-3-carboxaldehyde (CAS 1805206-51-2)
- 2-(1,2-Dithiolan-4-yl)acetic acid (CAS 1026517-37-2)
- 1-Benzyl-3-bromopiperidin-2-one (CAS 77868-86-1)
- Peptide 436 (CAS CATO-CPTD788436)
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