Oseltamivir impurity 281 CAS CATO-C4X-1720281
| CAS No. | CATO-C4X-1720281 |
| Molecular Formula | C15H24O4 |
| Molecular Weight | 268.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Oseltamivir impurity 281 (C15H24O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 supplies Oseltamivir impurity 281 (CAS CATO-C4X-1720281), a pharmacopoeial impurity reference standard (molecular formula C15H24O4, MW 268.35 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
As a certified reference material (CRM), Oseltamivir impurity 281 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 | C15H24O4 |
| Molecular Weight | 268.35 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Oseltamivir Standards
- Oseltamivir Impurity 102 (CAS 943515-58-0)
- Oseltamivir Impurity 30 (CAS 212504-89-7)
- Oseltamivir Impurity 229 (CAS CATO-C4X-1720229)
- Oseltamivir Impurity 122 (CAS 2097777-49-4)
- Oseltamivir Impurity 188 (CAS CATO-C4X-1720188)
- Oseltamivir Impurity 189 (CAS CATO-C4X-1720189)
- Oseltamivir Impurity 190 (CAS CATO-C4X-1720190)
- Oseltamivir Impurity 191 (CAS CATO-C4X-1720191)
Recommended Standards
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- Tegoprazan Impurity 53 (CAS CATO-C4X-229753)
- Clindamycin Impurity 96 (CAS CATO-C4X-134196)
- Neostigmine EP Impurity C (CAS 16088-19-0)
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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
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com