4-Ethyl-5-(1-phenyl-5-(trifluoromethyl)-1H-pyrazol-4-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione CAS 957014-53-8

Description

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.

4-Ethyl-5-(1-phenyl-5-(trifluoromethyl)-1H-pyrazol-4-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 957014-53-8), molecular formula C14H12F3N5S and molecular weight 339.34 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 4-Ethyl-5-(1-phenyl-5-(trifluoromethyl)-1H-pyrazol-4-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione (C14H12F3N5S) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, fluorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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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