Oseltamivir Impurity 103 CAS 204254-90-0
| CAS No. | 204254-90-0 |
| Molecular Formula | C15H24O7S |
| Molecular Weight | 348.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Oseltamivir Impurity 103 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.
As a process- or degradation-related impurity, Oseltamivir Impurity 103 (CAS 204254-90-0, C15H24O7S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Oseltamivir Impurity 103 (C15H24O7S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C15H24O7S |
| Molecular Weight | 348.41 g/mol |
| Purity | >95% |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Sulfur Atoms | 1 |
Related Oseltamivir Standards
- Oseltamivir Impurity 25 (CAS 1132659-98-3)
- Oseltamivir Impurity 104 (CAS 204254-92-2)
- Oseltamivir Impurity 28 (CAS 204254-94-4)
- Oseltamivir impurity 74 (CAS CATO-C4X-1720274)
- Oseltamivir Impurity 126 (CAS CATO-C4X-1720126)
- Oseltamivir Impurity 195 (CAS 312904-18-0)
- Oseltamivir Impurity 209 (CAS CATO-C4X-1720209)
- Oseltamivir Impurity 105 (CAS CATO-C4X-1720105)
Recommended Standards
- Tert-butyl (3S,4R)-4-(3-(cyanomethyl)-4-fluorophenyl)-3-(hydroxymethyl)piperidine-1-carboxylate (CAS 2055991-01-8)
- Sarizotan (CAS 351862-32-3)
- 8-Fluoro-3,3,4,4-tetramethyl-3,4-dihydro-2H-[1,3'-biquinolin]-2-one (CAS 918646-15-8)
- N-(4-(N-(4,6-Dimethylpyrimidin-2-yl)sulfamoyl)phenyl)butyramide (CAS 101428-40-4)
- Avanafil Impurity 112 (CAS CATO-C4X-1118112)
- Apremilast Impurity 31 (CAS 1831833-38-5)
- Mupirocin EP Impurity A (CAS 40980-51-6)
- ethyl 2-aminobutanoate hydrochloride (CAS 55410-21-4)
- 2-Methyl-6-nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (CAS 956821-91-3)
- 3-(Dimethylamino)-1-(2-nitrophenyl)prop-2-en-1-one (CAS 87488-61-7)
- ((Trifluoromethyl)sulfinyl)benzene (CAS 703-18-4)
- 2-Ethynyl-5-nitropyridine (CAS 452333-53-8)
- (R)-2-Phenyl-2,5-dihydrofuran (CAS 175274-01-8)
- Semaglutide impurity 62 (CAS CATO-C4X-222662)
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