Methylprednisolone impurity 82 CAS 106502-98-1
| CAS No. | 106502-98-1 |
| Molecular Formula | C22H30O5 |
| Molecular Weight | 374.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Methylprednisolone impurity 82 (C22H30O5) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Methylprednisolone impurity 82 (CAS 106502-98-1) is a certified pharmaceutical impurity reference standard with the molecular formula C22H30O5 and a molecular weight of 374.47 g/mol.
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.
CATO manufactures Methylprednisolone impurity 82 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C22H30O5 |
| Molecular Weight | 374.47 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1987 |
Related Methylprednisolone Standards
- Methylprednisolone Impurity 37 (CAS 1746-38-9)
- Methylprednisolone EP Impurity H (CAS 18462-27-6)
- Methylprednisolone impurity 87 (CAS 105500-05-8)
- 6-Alpha-Methylprednisolone (CAS 83-43-2)
- Methylprednisolone EP Impurity F (CAS 1625-39-4)
- Methylprednisolone impurity 95 (CAS 80944-41-8)
- Methylprednisolone Acetate EP Impurity C (CAS 58636-50-3)
- Methylprednisolone EP Impurity A (CAS 91523-05-6)
Recommended Standards
- Desoximetasone Impurity 1 (CAS 2770242-92-5)
- Glaucocalyxin B (CAS 80508-81-2)
- Betamethasone impurity 91 (CAS 114488-14-1)
- Dexamethasone Desfluoro 11-Epimer (CAS 78761-59-8)
- Semaglutide Impurity 125 xTFA Salt (CAS CATO-C4X-2226125)
- Orforglipron impurity 125 (CAS 3103103-07-4)
- Ruxolitinib Impurity 125 (CAS CATO-C4X-2058125)
- Methyl 3-[3-(3-methoxy-3-oxopropyl)phenyl]propanoate (CAS 6221-61-0)
- 3-(3-Acetyl-2,4-dimethyl-1h-pyrrol-1-yl)propanoic acid (CAS 842973-07-3)
- 2-(3-(Difluoromethyl)-4-methylbenzoyl)pyridine (CAS 1261468-47-6)
- 1-(4-Chlorobutyl)-3,5-dimethyl-1h-pyrazole-4-carbaldehyde (CAS 1315367-32-8)
- 3-Acetyl-3-chlorodihydrofuranone (CAS 2986-00-7)
- 13290-51-2 2,5-bis[(dimethylamino)methyl]cyclopentanone dihydrochloride R4343 (CAS 13290-51-2)
- Semaglutide Impurity 140 (CAS CATO-C4X-2226140)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com