Oseltamivir Impurity 157 CAS CATO-C4X-1720157
| CAS No. | CATO-C4X-1720157 |
| Molecular Formula | C9H14O9S2 |
| Molecular Weight | 330.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Oseltamivir Impurity 157 is closely related to a carbohydrate-derived structure, a sulfone group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Oseltamivir Impurity 157 (CAS CATO-C4X-1720157, C9H14O9S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C9H14O9S2, Oseltamivir Impurity 157 contains a carbohydrate-derived structure, a sulfone group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 330.33 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Oseltamivir Impurity 157 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 | C9H14O9S2 |
| Molecular Weight | 330.33 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Sulfur Atoms | 2 |
Related Oseltamivir Standards
- Oseltamivir Impurity 156 (CAS CATO-C4X-1720156)
- Oseltamivir Impurity 158 (CAS CATO-C4X-1720158)
- Oseltamivir Impurity 197 (CAS CATO-C4X-1720197)
- Oseltamivir Impurity 116 (CAS 2516234-45-8)
- Oseltamivir Impurity 240 (CAS CATO-C4X-1720240)
- Oseltamivir Impurity 152 (CAS 651324-04-8)
- Oseltamivir Impurity 55 (CAS 2730003-43-5)
- Oseltamivir Impurity 56 (CAS CATO-C4X-172056)
Recommended Standards
- Vonoprazan Impurity 64 (CAS 928324-73-6)
- Cabozantinib Impurity 23 (CAS CATO-C4X-201823)
- Vonoprazan Fumarate Impurity 5 (CAS 881677-11-8)
- Acetylshikonin (CAS 24502-78-1)
- Norfloxacin Impurity 48 (CAS CATO-C4X-146848)
- henylephrine Impurity 42 (CAS 73898-35-8)
- Atogepant Impurity 48 (CAS CATO-C4X-328548)
- 5-Bromo-2-(piperidin-1-yl)benzaldehyde (CAS 742099-33-8)
- 3-(((Benzyloxy)carbonyl)amino)-3-cyclopropylpropanoic acid (CAS 773867-84-8)
- 6,7-Dimethoxychroman-4-one (CAS 54013-49-9)
- 1-(2,3-Dihydro-1-benzofuran-5-ylmethyl)piperazine DiHCl (CAS 1052545-84-2)
- Dasatinib impurity 61 (CAS CATO-C4X-160761)
- Nonyl-β-D-1-thiomaltoside (CAS 148565-55-3)
- Semaglutide impurity 73 (CAS CATO-C4X-222673)
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