Methylprednisolone impurity 85 CAS CATO-C4X-191985
| CAS No. | CATO-C4X-191985 |
| Molecular Formula | C26H34O6 |
| Molecular Weight | 442.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Methylprednisolone impurity 85 (CAS CATO-C4X-191985), a pharmacopoeial impurity reference standard (molecular formula C26H34O6, MW 442.54 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Methylprednisolone impurity 85 (C26H34O6) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 442.54 g/mol, it falls into the moderately-high-molecular-weight range. 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).
CATO manufactures Methylprednisolone impurity 85 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 | C26H34O6 |
| Molecular Weight | 442.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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 |
Related Methylprednisolone Standards
- Methylprednisolone 17-Propionate (CAS 79512-61-1)
- Methylprednisolone 21-Propionate (CAS 138804-88-3)
- Methylprednisolone impurity 83 (CAS CATO-C4X-191983)
- Methylprednisolone Impurity 53 (CAS CATO-C4X-191953)
- Methylprednisolone Impurity 68 (CAS 86413-24-3)
- Methylprednisolone Impurity 91 (CAS 124106-96-3)
- Methylprednisolone impurity 97 (CAS CATO-C4X-191997)
- Methylprednisolone Hydrogen Succinate EP Impurity E (CAS 2920-86-7)
Recommended Standards
- 3-{[(4-methoxyphenyl)methyl]sulfanyl}-4-methyl-5-[1-phenyl-5-(1H-pyrrol-1-yl)-1H-pyrazol-4-yl]-4H-1,2,4-triazole (CAS 477709-34-5)
- Cinobufagin (CAS 470-37-1)
- (4-Chlorophenyl)(5,7-dibromobenzofuran-2-yl)methanone (CAS 83806-70-6)
- Rhodomyrtone (CAS 468757-69-9)
- Glutathione Impurity 24 (CAS CATO-C4X-118524)
- Isavuconazole Impurity 143 (CAS CATO-C4X-1236143)
- Trelagliptin Impurity 8 (CAS CATO-C4X-10468)
- 4-Bromo-1-(2-morpholinoethyl)-1h-pyrazol-3-amine (CAS 1250049-03-6)
- 898777-27-0 Ethyl 5-(3-iodophenyl)-5-oxopentanoate DTXSID40645712 (CAS 898777-27-0)
- 6-(Trifluoromethyl)pyrazolo[1,5-a]pyridin-2-amine (CAS 1391821-43-4)
- (2-Cyclobutyl-6-(piperidin-3-yl)pyridin-4-yl)boronic acid (CAS 2225152-45-2)
- 5-Chloro-1-cyclohexyl-1H-benzo[d]imidazole-2-thiol (CAS 298684-28-3)
- 1-Methyl-3-(thiophen-3-yl)-1H-pyrazole-4-carboxylic acid (CAS 1248613-51-5)
- Insulin Degludec Impurity 17 (CAS CATO-C4X-215717)
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