1,2,3-Benzothiadiazole-5-carbonyl chloride 321309-32-4 benzo[d][1,2,3]thiadiazole-5-carbonyl chloride CAS 321309-32-4

Description

1,2,3-Benzothiadiazole-5-carbonyl chloride 321309-32-4 benzo[d][1,2,3]thiadiazole-5-carbonyl chloride (CAS 321309-32-4) is a high-purity analytical reference standard with the molecular formula C7H3ClN2OS and a molecular weight of 198.63 g/mol.

1,2,3-Benzothiadiazole-5-carbonyl chloride 321309-32-4 benzo[d][1,2,3]thiadiazole-5-carbonyl chloride (C7H3ClN2OS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

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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