Oseltamivir Impurity 189 CAS CATO-C4X-1720189

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-1720189
Molecular FormulaC14H24O5
Molecular Weight272.34 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Oseltamivir Impurity 189 CAS CATO-C4X-1720189 chemical structure

Description

As a certified reference material (CRM), Oseltamivir Impurity 189 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.

CATO supplies Oseltamivir Impurity 189 (CAS CATO-C4X-1720189), a pharmacopoeial impurity reference standard (molecular formula C14H24O5, MW 272.34 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, Oseltamivir Impurity 189 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 272.34 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).

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.

Physical & Chemical Properties

Molecular FormulaC14H24O5
Molecular Weight272.34 g/mol
Purity>95%
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing

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