Methylprednisolone impurity 93 CAS CATO-C4X-191993
| CAS No. | CATO-C4X-191993 |
| Molecular Formula | C24H34O6 |
| Molecular Weight | 418.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C24H34O6, Methylprednisolone impurity 93 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 418.52 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 supplies Methylprednisolone impurity 93 (CAS CATO-C4X-191993), a pharmacopoeial impurity reference standard (molecular formula C24H34O6, MW 418.52 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.
CATO manufactures Methylprednisolone impurity 93 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 | C24H34O6 |
| Molecular Weight | 418.52 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Methylprednisolone Standards
- Methylprednisolone Acetate EP Impurity G (CAS 1625-11-2)
- Methylprednisolone Acetate EP Impurity A (Mixture of Diastereomers) (CAS 151003-82-6)
- Methylprednisolone impurity 89 (CAS CATO-C4X-191989)
- Methylprednisolone impurity 90 (CAS CATO-C4X-191990)
- Methylprednisolone Acetate EP Impurity J (CAS 1048031-82-8)
- Methylprednisolone EP Impurity J (CAS 53-36-1)
- Methylprednisolone impurity 94 (CAS 86401-94-7)
- Methylprednisolone Impurity 47 (CAS CATO-C4X-191947)
Recommended Standards
- Tucatinib Impurity 7 (CAS CATO-C4X-26057)
- Estetrol Impurity 1 (CAS CATO-C4X-32501)
- Phyllanthin (CAS 10351-88-9)
- 1-(1,1-Dioxidotetrahydrothiophen-3-yl)-3-methyl-N-propyl-6-(thiophen-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxamide (CAS 1021055-13-9)
- Etrasimod impurity 2 (CAS 1206123-51-4)
- Gabapentin Impurity 20 (CAS CATO-C4X-165420)
- Ceftolozane Impurity 42 (CAS CATO-C4X-240642)
- 6-Bromo-2-(3-methoxyphenyl)pyridazin-3(2h)-one (CAS 2091941-51-2)
- Methyl 2-[(4-chlorophenyl)sulfonyl]-6-oxohexahydro-4-pyridazinecarboxylate (CAS 339096-87-6)
- Methyl 2-((2-(1H-imidazol-1-yl)ethyl)thio)-5-chloro-1-methyl-1H-benzo[d]imidazole-6-carboxylate (CAS 1446718-32-6)
- 1-(2-Hydroxy-5-nitrophenyl)-2-phenylethanone (CAS 107558-17-8)
- Tetrahydro-α-hydroxy-3-furanacetonitrile (CAS 1155915-36-8)
- 5-Ethynyl-2-(trifluoromethyl)pyridine (CAS 1196155-24-4)
- Semaglutide Impurity 12 (CAS CATO-C4X-222612)
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