Oseltamivir Impurity 109 CAS CATO-C4X-1720109
| CAS No. | CATO-C4X-1720109 |
| Molecular Formula | C11H18ClNO4 |
| Molecular Weight | 263.72 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 263.72 g/mol gives Oseltamivir Impurity 109 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Oseltamivir Impurity 109 (CAS CATO-C4X-1720109) is a certified pharmaceutical impurity reference standard with the molecular formula C11H18ClNO4 and a molecular weight of 263.72 g/mol.
The molecular framework of Oseltamivir Impurity 109 (C11H18ClNO4) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 109 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 | C11H18ClNO4 |
| Molecular Weight | 263.72 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Oseltamivir Standards
- Oseltamivir Impurity 229 (CAS CATO-C4X-1720229)
- Oseltamivir impurity 281 (CAS CATO-C4X-1720281)
- Oseltamivir Impurity 102 (CAS 943515-58-0)
- Oseltamivir Impurity 30 (CAS 212504-89-7)
- Oseltamivir Impurity 134 (CAS CATO-C4X-1720134)
- Oseltamivir Impurity 122 (CAS 2097777-49-4)
- Oseltamivir Impurity 188 (CAS CATO-C4X-1720188)
- Oseltamivir Impurity 189 (CAS CATO-C4X-1720189)
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