4,5-Difluoro-2-nitrobenzoic Acid CAS 20372-63-8

Description

Compared with other compounds in its class, the molecular weight of 203.10 g/mol gives 4,5-Difluoro-2-nitrobenzoic Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4,5-Difluoro-2-nitrobenzoic Acid (CAS 20372-63-8) is a high-purity analytical reference standard with the molecular formula C7H3F2NO4 and a molecular weight of 203.10 g/mol.

The molecular framework of 4,5-Difluoro-2-nitrobenzoic Acid (C7H3F2NO4) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

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