4-(((4-Bromophenyl)thio)methyl)-5-(2,4-dichlorophenoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazole CAS 318959-19-2

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.

4-(((4-Bromophenyl)thio)methyl)-5-(2,4-dichlorophenoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazole (CAS 318959-19-2), molecular formula C18H12BrCl2F3N2OS and molecular weight 512.17 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/chlorine/bromine substitution, 4-(((4-Bromophenyl)thio)methyl)-5-(2,4-dichlorophenoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazole is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 512.17 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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