4H,5H-[1,2,4]triazolo[1,5-a]quinazolin-5-one CAS 73549-68-5

Description

The occurrence of 4H,5H-[1,2,4]triazolo[1,5-a]quinazolin-5-one is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 4H,5H-[1,2,4]triazolo[1,5-a]quinazolin-5-one (CAS 73549-68-5), a certified reference material (molecular formula C9H6N4O, MW 186.17 g/mol) for analytical method development and quality control.

Structurally, 4H,5H-[1,2,4]triazolo[1,5-a]quinazolin-5-one (C9H6N4O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 186.17 g/mol, it falls into the medium-molecular-weight range. 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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