Finasteride Impurity 26 CAS 133216-45-2

Description

Compared with other compounds in its class, the molecular weight of 398.58 g/mol gives Finasteride Impurity 26 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Finasteride Impurity 26 (CAS 133216-45-2) is a certified pharmaceutical impurity reference standard with the molecular formula C25H38N2O2 and a molecular weight of 398.58 g/mol.

Structurally, Finasteride Impurity 26 (C25H38N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 398.58 g/mol, it falls into the moderately-high-molecular-weight range. 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), Finasteride Impurity 26 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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