3-(4-(Difluoromethoxy)phenyl)isoxazole-5-carboxylic acid CAS 1038311-61-3

Description

Compared with other compounds in its class, the molecular weight of 255.17 g/mol gives 3-(4-(Difluoromethoxy)phenyl)isoxazole-5-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

3-(4-(Difluoromethoxy)phenyl)isoxazole-5-carboxylic acid (CAS 1038311-61-3) is a high-purity analytical reference standard with the molecular formula C11H7F2NO4 and a molecular weight of 255.17 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, 3-(4-(Difluoromethoxy)phenyl)isoxazole-5-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 255.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

As a certified reference material (CRM), 3-(4-(Difluoromethoxy)phenyl)isoxazole-5-carboxylic acid 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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