Cholecalciferol impurity 23 CAS 168609-17-4

Description

Compared with other compounds in its class, the molecular weight of 416.64 g/mol gives Cholecalciferol impurity 23 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Cholecalciferol impurity 23 (CAS 168609-17-4), a pharmacopoeial impurity reference standard (molecular formula C27H44O3, MW 416.64 g/mol) used for the identification and quantification of trace impurities in APIs.

Based on its molecular formula C27H44O3, Cholecalciferol impurity 23 contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 416.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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), Cholecalciferol impurity 23 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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