Epalrestat Impurity 15 CAS CATO-C4X-223615

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-223615
Molecular FormulaC3H3NO5S2
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Epalrestat Impurity 15 CAS CATO-C4X-223615 chemical structure

Description

Epalrestat Impurity 15 (CAS CATO-C4X-223615) is a certified pharmaceutical impurity reference standard with the molecular formula C3H3NO5S2H4N and a molecular weight of 215.22 g/mol.

Epalrestat Impurity 15 (C3H3NO5S2H4N) contains an amide group, a sulfone group, a carboxylic acid group, an ether linkage. It is notably hygroscopic, 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.

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.

As a certified reference material (CRM), Epalrestat Impurity 15 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.

Physical & Chemical Properties

Molecular FormulaC3H3NO5S2 2*H4N
Molecular Weight215.22 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)1.5
Nitrogen Atoms2
Sulfur Atoms2

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