4-Ethyl-[1,2,3]thiadiazole-5-carbonyl chloride 889939-72-4 CAS 889939-72-4

Description

Compared with other compounds in its class, the molecular weight of 176.62 g/mol gives 4-Ethyl-[1,2,3]thiadiazole-5-carbonyl chloride 889939-72-4 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 4-Ethyl-[1,2,3]thiadiazole-5-carbonyl chloride 889939-72-4 (CAS 889939-72-4), a certified reference material (molecular formula C5H5ClN2OS, MW 176.62 g/mol) for analytical method development and quality control.

Based on its molecular formula C5H5ClN2OS, 4-Ethyl-[1,2,3]thiadiazole-5-carbonyl chloride 889939-72-4 contains 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 176.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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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