2,5-Dihydro-1-(4-nitrophenyl)-5-oxo-1H-1,2,4-triazole-3-carboxylic acid CAS 854738-30-0

Description

Compared with other compounds in its class, the molecular weight of 250.17 g/mol gives 2,5-Dihydro-1-(4-nitrophenyl)-5-oxo-1H-1,2,4-triazole-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2,5-Dihydro-1-(4-nitrophenyl)-5-oxo-1H-1,2,4-triazole-3-carboxylic acid (CAS 854738-30-0), molecular formula C9H6N4O5 and molecular weight 250.17 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 2,5-Dihydro-1-(4-nitrophenyl)-5-oxo-1H-1,2,4-triazole-3-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 250.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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