2-Bromo-4-(difluoromethyl)-5-nitropyridine CAS 1805593-76-3

Description

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.

2-Bromo-4-(difluoromethyl)-5-nitropyridine (CAS 1805593-76-3), molecular formula C6H3BrF2N2O2 and molecular weight 253.00 g/mol, is a CATO reference standard with documented purity and traceability.

2-Bromo-4-(difluoromethyl)-5-nitropyridine (C6H3BrF2N2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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 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.

Physical & Chemical Properties

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