(5E)-5-(4-Chlorobenzylidene)-2-mercapto-1,3-thiazol-4(5H)-one CAS 81154-18-9

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.

(5E)-5-(4-Chlorobenzylidene)-2-mercapto-1,3-thiazol-4(5H)-one (CAS 81154-18-9), molecular formula C10H6ClNOS2 and molecular weight 255.74 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C10H6ClNOS2, (5E)-5-(4-Chlorobenzylidene)-2-mercapto-1,3-thiazol-4(5H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 255.74 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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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