Oseltamivir Impurity 121 CAS CATO-C4X-1720121
| CAS No. | CATO-C4X-1720121 |
| Molecular Formula | C12H18O4 |
| Molecular Weight | 226.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Oseltamivir Impurity 121 (C12H18O4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), 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).
CATO supplies Oseltamivir Impurity 121 (CAS CATO-C4X-1720121), a pharmacopoeial impurity reference standard (molecular formula C12H18O4, MW 226.27 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 121 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 | C12H18O4 |
| Molecular Weight | 226.27 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Oseltamivir Standards
- Oseltamivir Impurity 101 (CAS CATO-C4X-1720101)
- Oseltamivir Impurity 79 (CAS CATO-C4X-172079)
- Oseltamivir Impurity 260 (CAS 221386-93-2)
- Oseltamivir Impurity 78 (CAS CATO-C4X-172078)
- Oseltamivir impurity 63 (CAS CATO-C4X-1720263)
- Oseltamivir EP Impurity D (CAS 1346604-18-9)
- Oseltamivir Impurity 140 (CAS 1246620-91-6)
- Oseltamivir EP Impurity H (CAS 814-29-9)
Recommended Standards
- Ropivacaine Impurity 23 (CAS 352637-51-5)
- 4-methyl-N-(5-methylpyridin-2-yl)benzamide (CAS 349122-64-1)
- Phenytoin Impurity 12 (CAS 15427-81-3)
- Bupivacaine EP Impurity A (CAS 39627-98-0)
- Halometasone Impurity 4 (CAS CATO-C4X-14464)
- Belzutifan Impurity 2 (CAS CATO-C4X-33942)
- Clavulanate Potassium EP Impurity M DiHCl (CAS 103526-47-2)
- 3-(2-furyl)-1-(4-methylphenyl)-1H-pyrazole-5-carboxylic acid (CAS 882238-45-1)
- (3-Methylpentan-2-yl)({[1,2,4]triazolo[4,3-a]pyridin-3-ylmethyl})amine dihydrochloride (CAS 1240528-79-3)
- 1,3-Diiodo-2,2-dimethylpropane (CAS 66688-49-1)
- Topiroxostat Impurity 3 (CAS 13602-12-5)
- tert-Butyl (2-(4-nitro-1H-imidazol-1-yl)ethyl)carbamate (CAS 154095-00-8)
- N-benzyl-N-methylpiperazine-1-carboxamide (CAS 926248-93-3)
- Semaglutide (CAS CATO-C4X-2226105)
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