Oseltamivir Impurity 137 CAS CATO-C4X-1720137
| CAS No. | CATO-C4X-1720137 |
| Molecular Formula | C17H31NO4 |
| Molecular Weight | 313.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Oseltamivir Impurity 137 (CAS CATO-C4X-1720137), a pharmacopoeial impurity reference standard (molecular formula C17H31NO4, MW 313.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Oseltamivir Impurity 137 (C17H31NO4) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 manufactures Oseltamivir Impurity 137 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.
Physical & Chemical Properties
| Molecular Formula | C17H31NO4 |
| Molecular Weight | 313.43 g/mol |
| Appearance | White to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 1 |
Related Oseltamivir Standards
- Oseltamivir impurity 289 (CAS 1443055-47-7)
- Oseltamivir Impurity 35 (CAS CATO-C4X-172035)
- Oseltamivir Impurity 118 (CAS CATO-C4X-1720118)
- Oseltamivir Impurity 119 (CAS 2081110-43-0)
- Oseltamivir Impurity 144 (CAS 2413185-95-0)
- Oseltamivir Impurity 173 (CAS 2081110-44-1)
- Oseltamivir impurity 292 (CAS 1402431-91-7)
- Oseltamivir EP Impurity G (CAS 956267-10-0)
Recommended Standards
- Salbutamol Impurity 162 (CAS CATO-C4X-1176162)
- Trilostane Impurity 2 (CAS 2301065-59-6)
- Atorvastatin Impurity 168 (CAS CATO-C4X-1132168)
- Trilostane Impurity 5 (CAS CATO-C4X-21375)
- Edaravone impurity 48 (CAS 87343-64-4)
- Folic Acid Impurity 52 (CAS CATO-C4X-139552)
- Clindamycin Impurity 22 HCI (CAS 1123211-70-0（free base）)
- 2-((6-Methoxy-1h-benzo[d]imidazol-2-yl)thio)acetaldehyde (CAS 1250343-26-0)
- 4-Phenethylpiperidin-4-ol (CAS 138047-74-2)
- 5-Bromo-2-methyl-3-nitrobenzonitrile (CAS 898746-87-7)
- Ethyl 4-(4-(thiophene-2-carbonyl)-1H-1,2,3-triazol-1-yl)benzoate (CAS 477847-86-2)
- 2,4,6-Trihydroxybenzoic Acid Monohydrate (CAS 71989-93-0)
- 3-[(4-fluorophenyl)methylidene]pyrrolidine-2,5-dione (CAS 259654-28-9)
- Semaglutide (CAS 910463-68-2（free base）)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com