Roxadustat Impurity 136 CAS CATO-C4X-2213136
| CAS No. | CATO-C4X-2213136 |
| Molecular Formula | C19H14O4 |
| Molecular Weight | 306.31 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 Roxadustat Impurity 136 (CAS CATO-C4X-2213136), a pharmacopoeial impurity reference standard (molecular formula C19H14O4, MW 306.31 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Roxadustat Impurity 136 (C19H14O4) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 306.31 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO manufactures Roxadustat Impurity 136 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 | C19H14O4 |
| Molecular Weight | 306.31 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Roxadustat Standards
- Roxadustat Impurity 137 (CAS CATO-C4X-2213137)
- Roxadustat Impurity 105 (CAS CATO-C4X-2213105)
- Roxadustat Impurity 48 (CAS CATO-C4X-221348)
- Roxadustat Impurity N1 (CAS 808116-52-1)
- Roxadustat Impurity 39 (CAS CATO-C4X-221339)
- Roxadustat Impurity 73 (CAS CATO-C4X-221373)
- Roxadustat Impurity N3 (CAS 1421312-34-6)
- Roxadustat Impurity 165 (CAS CATO-C4X-2213165)
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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