Guaiacol EP Impurity E CAS 93-58-3

Description

Compared with other compounds in its class, the molecular weight of 136.15 g/mol gives Guaiacol EP Impurity E distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Guaiacol EP Impurity E (CAS 93-58-3), a pharmacopoeial impurity reference standard (molecular formula C8H8O2, MW 136.15 g/mol) used for the identification and quantification of trace impurities in APIs.

Guaiacol EP Impurity E (C8H8O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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), Guaiacol EP Impurity E 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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