Tiopronin Impurity 8 CAS CATO-C4X-15168

Description

Compared with other compounds in its class, the molecular weight of 195.19 g/mol gives Tiopronin Impurity 8 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Tiopronin Impurity 8 (CAS CATO-C4X-15168), a pharmacopoeial impurity reference standard (molecular formula C5H9NO5S, MW 195.19 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Tiopronin Impurity 8 (C5H9NO5S) is characterized by a carbohydrate-derived structure, an amide group, a sulfone group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), Tiopronin Impurity 8 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

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