Indocyanine Green Impurity 16 CAS CATO-C4X-250316

Description

The occurrence of Indocyanine Green Impurity 16 is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Indocyanine Green Impurity 16 (CAS CATO-C4X-250316), a pharmacopoeial impurity reference standard (molecular formula C35H32N2, MW 480.64 g/mol) used for the identification and quantification of trace impurities in APIs.

Indocyanine Green Impurity 16 (C35H32N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), Indocyanine Green Impurity 16 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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