Methylprednisolone Acetate EP Impurity C CAS 58636-50-3
| CAS No. | 58636-50-3 |
| Molecular Formula | C22H28O5 |
| Molecular Weight | 372.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Methylprednisolone Acetate EP Impurity C (C22H28O5) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 372.45 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Methylprednisolone Acetate EP Impurity C (CAS 58636-50-3), a pharmacopoeial impurity reference standard (molecular formula C22H28O5, MW 372.45 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Methylprednisolone Acetate EP Impurity C 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 | C22H28O5 |
| Molecular Weight | 372.45 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Methylprednisolone Standards
- Methylprednisolone EP Impurity A (CAS 91523-05-6)
- Methylprednisolone Impurity 62 (CAS 95810-22-3)
- 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
- JNK Inhibitor V (CAS 345987-15-7)
- N-Cyclooctyl-2-[(3,4,4-trifluorobut-3-en-1-yl)sulfanyl]pyridine-3-carboxamide (CAS 478067-85-5)
- Galgravin (CAS 528-63-2)
- Prednylidene (CAS 599-33-7)
- Vonoprazan Impurity 296 (CAS CATO-C4X-1020296)
- Empagliflozin impurity 196 (CAS CATO-C4X-1065196)
- Bisoprolol Impurity 30 (CAS CATO-C4X-124730)
- Methyl 2-bromo-5-fluoro-3-((4-methylphenyl)sulfonamido)benzoate (CAS 2086689-91-8)
- 3-Bromo-4-fluorobenzaldehyde (CAS 77771-02-9)
- N,N'-Dimethyl-1,2-diphenylethane-1,2-diamine (CAS 22751-68-4)
- 2-(2-Methyl-6-oxo-1,6-dihydropyridin-3-yl)piperidine-1-carbaldehyde (CAS 1352507-02-8)
- 4-Nitro-N-(4,4,6-trimethyl-2-(methylthio)pyrimidin-1(4H)-yl)benzamide (CAS 96601-35-3)
- 3-(3,5-Dichlorophenyl)-1-(2,2,3-trimethylbutanoyl)imidazolidine-2,4-dione (CAS 90815-23-9)
- Vialox Peptide(Pentapeptide-3) (CAS 135679-88-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com