Gadobutrol Impurity 121 CAS 122555-91-3

Description

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.

CATO supplies Gadobutrol Impurity 121 (CAS 122555-91-3), a pharmacopoeial impurity reference standard (molecular formula C26H50N4O6, MW 514.70 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Gadobutrol Impurity 121 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 514.70 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).

As a certified reference material (CRM), Gadobutrol Impurity 121 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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