Nerandomilast impurity 19 CAS CATO-C4X-347319

Description

Compared with other compounds in its class, the molecular weight of 271.77 g/mol gives Nerandomilast impurity 19 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Nerandomilast impurity 19 (CAS CATO-C4X-347319), a pharmacopoeial impurity reference standard (molecular formula C11H14ClN3OS, MW 271.77 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Nerandomilast impurity 19 (C11H14ClN3OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 271.77 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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), Nerandomilast impurity 19 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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