Posaconazole Impurity 19(S,S,R,S) CAS 2243785-99-9

Description

Compared with other compounds in its class, the molecular weight of 700.78 g/mol gives Posaconazole Impurity 19(S,S,R,S) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Posaconazole Impurity 19(S,S,R,S) (CAS 2243785-99-9), a pharmacopoeial impurity reference standard (molecular formula C37H42F2N8O4, MW 700.78 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Posaconazole Impurity 19(S,S,R,S) (C37H42F2N8O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 20.0, corresponding to approximately 20 ring(s) or double-bond equivalent(s). With a molecular weight of 700.78 g/mol, it falls into the high-molecular-weight range. 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), Posaconazole Impurity 19(S,S,R,S) 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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