4-Ethyl-3-(1-hydroxyethyl)-1H-1,2,4-triazol-5(4H)-one CAS 404595-24-0

Description

The occurrence of 4-Ethyl-3-(1-hydroxyethyl)-1H-1,2,4-triazol-5(4H)-one is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

4-Ethyl-3-(1-hydroxyethyl)-1H-1,2,4-triazol-5(4H)-one (CAS 404595-24-0), molecular formula C6H11N3O2 and molecular weight 157.17 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, 4-Ethyl-3-(1-hydroxyethyl)-1H-1,2,4-triazol-5(4H)-one is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 157.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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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