4-(4-Ethyl-phenyl)-1-mercapto-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-one CAS 885459-12-1

Description

4-(4-Ethyl-phenyl)-1-mercapto-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-one (CAS 885459-12-1), molecular formula C17H14N4OSC3H7NO and molecular weight 395.48 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 4-(4-Ethyl-phenyl)-1-mercapto-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-one (C17H14N4OSC3H7NO) is characterized by a steroid core, an amide group, a sulfone 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).

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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