Butylphthalide Impurity N7 CAS 76681-73-7

Description

Compared with other compounds in its class, the molecular weight of 188.22 g/mol gives Butylphthalide Impurity N7 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Butylphthalide Impurity N7 (CAS 76681-73-7), a pharmacopoeial impurity reference standard (molecular formula C12H12O2, MW 188.22 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Butylphthalide Impurity N7 (C12H12O2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), Butylphthalide Impurity N7 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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