| CAS No. | CATO-C4X-1720123 |
| Molecular Formula | C16H28O5 |
| Molecular Weight | 300.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Oseltamivir Impurity 123 (CAS CATO-C4X-1720123) is a certified pharmaceutical impurity reference standard with the molecular formula C16H28O5 and a molecular weight of 300.39 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, Oseltamivir Impurity 123 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 300.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures Oseltamivir Impurity 123 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.
| Molecular Formula | C16H28O5 |
| Molecular Weight | 300.39 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |