N-(3,4-difluorophenyl)-2-((4-ethyl-5-phenyl-4H-1,2,4-triazol-3-yl)thio)acetamide CAS 564456-77-5

Description

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.

N-(3,4-difluorophenyl)-2-((4-ethyl-5-phenyl-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 564456-77-5), molecular formula C18H16F2N4OS and molecular weight 374.41 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine substitution, N-(3,4-difluorophenyl)-2-((4-ethyl-5-phenyl-4H-1,2,4-triazol-3-yl)thio)acetamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 374.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

Physical & Chemical Properties

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