Terazosin EP Impurity K CAS 19216-56-9

Description

Compared with other compounds in its class, the molecular weight of 383.40 g/mol gives Terazosin EP Impurity K distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Terazosin EP Impurity K (CAS 19216-56-9) is a certified pharmaceutical impurity reference standard with the molecular formula C19H21N5O4 and a molecular weight of 383.40 g/mol.

Structurally, Terazosin EP Impurity K (C19H21N5O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 383.40 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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), Terazosin EP Impurity K 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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