Oseltamivir Impurity 282 CAS CATO-C4X-1720282
| CAS No. | CATO-C4X-1720282 |
| Molecular Formula | C7H8O4 |
| Molecular Weight | 156.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Oseltamivir Impurity 282 (CAS CATO-C4X-1720282) is a certified pharmaceutical impurity reference standard with the molecular formula C7H8O4 and a molecular weight of 156.14 g/mol.
Based on its molecular formula C7H8O4, Oseltamivir Impurity 282 contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 156.14 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H8O4 |
| Molecular Weight | 156.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Oseltamivir Standards
- Oseltamivir Impurity 170 (CAS 122-51-0)
- Oseltamivir Impurity 27 (CAS CATO-C4X-172027)
- Oseltamivir Impurity 154 (CAS 40983-58-2)
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Recommended Standards
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