4-Methyl-[1,2,4]triazolo[4,3-a]quinoxalin-1(2H)-one CAS 19848-94-3

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Methyl-[1,2,4]triazolo[4,3-a]quinoxalin-1(2H)-one.

4-Methyl-[1,2,4]triazolo[4,3-a]quinoxalin-1(2H)-one (CAS 19848-94-3) is a high-purity analytical reference standard with the molecular formula C10H8N4O and a molecular weight of 200.20 g/mol.

The molecular framework of 4-Methyl-[1,2,4]triazolo[4,3-a]quinoxalin-1(2H)-one (C10H8N4O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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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