Oseltamivir Impurity 20 CAS CATO-C4X-172020
| CAS No. | CATO-C4X-172020 |
| Molecular Formula | C16H28N2O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H28N2O4HCl, Oseltamivir Impurity 20 contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 348.87 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).
CATO supplies Oseltamivir Impurity 20 (CAS CATO-C4X-172020), a pharmacopoeial impurity reference standard (molecular formula C16H28N2O4HCl, MW 348.87 g/mol) used for the identification and quantification of trace impurities in APIs.
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 20 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 | C16H28N2O4 HCl |
| Molecular Weight | 348.87 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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 | 2 |
Related Oseltamivir Standards
- Oseltamivir Impurity 133 (CAS 10098-40-5)
- Oseltamivir impurity 265 Phosphate (CAS 1035895-88-5)
- Ent-Oseltamivir HCl (CAS 1035895-88-5(Free Base))
- Ent-Oseltamivir Phosphate (CAS 1035895-89-6)
- Oseltamivir Impurity N42 (CAS 1052063-36-1)
- Oseltamivir EP Impurity F HCl（Mixture of Diastereomers） (CAS 1052063-37-2（free base）)
- Oseltamivir-d3 (CAS 1093851-61-6)
- Oseltamivir Hydrochloride D3 (CAS 1093851-61-6(free base))
Recommended Standards
- Pemetrexed Impurity (CAS 83795-61-3)
- Methocarbamol Impurity 8 (CAS CATO-C4X-24448)
- Ozefloxacin Impurity 9 (CAS CATO-C4X-27969)
- Chloromethyl 2-methylbutanoate (CAS 82504-44-7)
- 226930-88-7 (1-Isobutyl-1H-imidazol-5-yl)methanol DTXSID60470583 (CAS 226930-88-7)
- 1-[4-Benzylphenoxy]-2-ethylaminoethane hydrochloride (CAS 1052514-21-2)
- Methyl 4-amino-1H-benzo[d]imidazole-6-carboxylate (CAS 706823-07-6)
- (5-Chloro-2-(difluoromethyl)phenyl)methanol (CAS 1784592-44-4)
- 1-(2-Chloro-6-fluorophenyl)cyclopropanamine (CAS 1094218-29-7)
- Neuropeptide Y (13-36) (human, rat) (CAS 122341-40-6)
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