Oseltamivir Impurity 28 CAS 204254-94-4

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.204254-94-4
Molecular FormulaC15H26O7S
Molecular Weight350.43 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Oseltamivir Impurity 28 CAS 204254-94-4 chemical structure

Description

Oseltamivir Impurity 28 (CAS 204254-94-4) is a certified pharmaceutical impurity reference standard with the molecular formula C15H26O7S and a molecular weight of 350.43 g/mol.

The molecular framework of Oseltamivir Impurity 28 (C15H26O7S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, 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).

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 28 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 FormulaC15H26O7S
Molecular Weight350.43 g/mol
Purity>90%
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)2015
Sulfur Atoms1

Related Oseltamivir Standards

Recommended Standards

Why CATO?