Roflumilast impurity 22 CAS 343927-62-8

Description

Compared with other compounds in its class, the molecular weight of 144.56 g/mol gives Roflumilast impurity 22 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Roflumilast impurity 22 (CAS 343927-62-8), a pharmacopoeial impurity reference standard (molecular formula C5H5ClN2O, MW 144.56 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Roflumilast impurity 22 (C5H5ClN2O) is characterized by an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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), Roflumilast impurity 22 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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