7-Hydroxy-3-(1-phenyl-1h-pyrazol-4-yl)-2-(trifluoromethyl)-4h-chromen-4-one CAS 51412-01-2

Description

The molecular framework of 7-Hydroxy-3-(1-phenyl-1h-pyrazol-4-yl)-2-(trifluoromethyl)-4h-chromen-4-one (C19H11F3N2O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. 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).

7-Hydroxy-3-(1-phenyl-1h-pyrazol-4-yl)-2-(trifluoromethyl)-4h-chromen-4-one (CAS 51412-01-2), molecular formula C19H11F3N2O3 and molecular weight 372.30 g/mol, is a CATO reference standard with documented purity and traceability.

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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