4-Chlorobenzenesulfinic acid CAS 100-03-8

Description

Compared with other compounds in its class, the molecular weight of 176.62 g/mol gives 4-Chlorobenzenesulfinic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-Chlorobenzenesulfinic acid (CAS 100-03-8) is a high-purity analytical reference standard with the molecular formula C6H5ClO2S and a molecular weight of 176.62 g/mol.

Based on its molecular formula C6H5ClO2S, 4-Chlorobenzenesulfinic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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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