Oseltamivir Impurity 23 CAS 1132659-94-9
| CAS No. | 1132659-94-9 |
| Molecular Formula | C12H20O11S3 |
| Molecular Weight | 436.48 g/mol |
| 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.
Oseltamivir Impurity 23 (CAS 1132659-94-9) is a certified pharmaceutical impurity reference standard with the molecular formula C12H20O11S3 and a molecular weight of 436.48 g/mol.
Owing to a carbohydrate-derived structure, a sulfone group, Oseltamivir Impurity 23 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 436.48 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 23 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 | C12H20O11S3 |
| Molecular Weight | 436.48 g/mol |
| Purity | ≥95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1989 |
| Sulfur Atoms | 3 |
Related Oseltamivir Standards
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- Methyl 3-bromo-2-chloro-5-methylbenzoate (CAS 2092209-00-0)
- D-[Val]10-Semaglutide (CAS CATO-CPTD788630)
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