Calcitriol Impurity 66 CAS CATO-C4X-151066

Description

Compared with other compounds in its class, the molecular weight of 585.06 g/mol gives Calcitriol Impurity 66 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Calcitriol Impurity 66 (CAS CATO-C4X-151066) is a certified pharmaceutical impurity reference standard with the molecular formula C36H64O2Si2 and a molecular weight of 585.06 g/mol.

The molecular framework of Calcitriol Impurity 66 (C36H64O2Si2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), Calcitriol Impurity 66 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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