1-[(4-Methoxyphenyl)methyl]-3-methyl-4-(4-methylphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-one CAS 860789-71-5

Description

The occurrence of 1-[(4-Methoxyphenyl)methyl]-3-methyl-4-(4-methylphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-one is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

1-[(4-Methoxyphenyl)methyl]-3-methyl-4-(4-methylphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 860789-71-5), molecular formula C18H19N3O2 and molecular weight 309.36 g/mol, is a CATO reference standard with documented purity and traceability.

1-[(4-Methoxyphenyl)methyl]-3-methyl-4-(4-methylphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-one (C18H19N3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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