Oseltamivir Impurity 260 CAS 221386-93-2
| CAS No. | 221386-93-2 |
| Molecular Formula | C11H16O5 |
| Molecular Weight | 228.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Oseltamivir Impurity 260 (C11H16O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 228.24 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Oseltamivir Impurity 260 (CAS 221386-93-2) is a certified pharmaceutical impurity reference standard with the molecular formula C11H16O5 and a molecular weight of 228.24 g/mol.
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.
CATO manufactures Oseltamivir Impurity 260 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 | C11H16O5 |
| Molecular Weight | 228.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
Related Oseltamivir Standards
- Oseltamivir Impurity 78 (CAS CATO-C4X-172078)
- Oseltamivir Impurity 79 (CAS CATO-C4X-172079)
- Oseltamivir Impurity 101 (CAS CATO-C4X-1720101)
- Oseltamivir Impurity 121 (CAS CATO-C4X-1720121)
- Oseltamivir Impurity 140 (CAS 1246620-91-6)
- Oseltamivir impurity 63 (CAS CATO-C4X-1720263)
- Oseltamivir EP Impurity D (CAS 1346604-18-9)
- Oseltamivir Impurity 59 (CAS 722-97-4)
Recommended Standards
- Telmisartan Impurity 31 (CAS 158144-54-8)
- Bisoprolol Impurity 117 (CAS 853233-62-2)
- Abemaciclib Impurity 37 (CAS CATO-C4X-293737)
- Posaconazole Impurity 81 (CAS 165115-73-1)
- Fluocortolone Impurity 11 (CAS CATO-C4X-223011)
- Trelagliptin Impurity 15 (CAS CATO-C4X-104615)
- Iopamidol Impurity 57 (CAS CATO-C4X-145057)
- 8-Azaspiro[4.5]Decane-2-carboxylic acid (CAS 1508135-36-1)
- Darolutamide Impurity 49 (CAS CATO-C4X-310649)
- N-([1,1'-Biphenyl]-2-yl)-2-((4-ethyl-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 482639-76-9)
- N-(1,3-bis(1H-benzo[d][1,2,3]triazol-1-yl)propyl)benzamide (CAS 301343-99-7)
- Tert-butyl 3-methyl-5-(methylamino)isothiazole-4-carboxylate (CAS 1539717-82-2)
- 4-Amino-3-methoxybenzenesulfonamide (CAS 37559-30-1)
- Semaglutide Impurity 4 (CAS CATO-C4X-22264)
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