Oseltamivir Impurity 262 CAS CATO-C4X-1720262
| CAS No. | CATO-C4X-1720262 |
| Molecular Formula | C11H18N2O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Oseltamivir Impurity 262 (CAS CATO-C4X-1720262), a pharmacopoeial impurity reference standard (molecular formula C11H18N2O4HCl, MW 278.73 g/mol) used for the identification and quantification of trace impurities in APIs.
Oseltamivir Impurity 262 (C11H18N2O4HCl) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H18N2O4 HCl |
| Molecular Weight | 278.73 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, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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
- Topiramate Impurity 36 (CAS 455899-78-2)
- Barloxavir impurity 91 (CAS 1057218-86-6)
- Zolmitriptan Impurity 40 (CAS CATO-C4X-135140)
- 4-Bromo-N-(1-methoxypropan-2-yl)-1h-pyrrole-2-carboxamide (CAS 1061603-29-9)
- Pioglitazone (CAS 625853-74-9)
- Nicardipine Impurity 61 (CAS CATO-C4X-171061)
- 1-(3,4-Dimethylphenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylic acid (CAS 1204297-04-0)
- Ethyl 4-oxo-4-(3-trifluoromethylphenyl)butyrate (CAS 166312-68-1)
- 3-((5-Chlorothiophen-2-yl)methyl)piperidin-3-ol (CAS 1484460-63-0)
- Semaglutide impurity 268 (CAS CATO-C4X-2226268)
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