3-chlorosulfonyl-4-methyl-benzoic acid CAS 2548-29-0

Description

Compared with other compounds in its class, the molecular weight of 240.70 g/mol gives 3-chlorosulfonyl-4-methyl-benzoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

3-chlorosulfonyl-4-methyl-benzoic acid (CAS 2548-29-0), molecular formula C8H13ClO4S and molecular weight 240.70 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C8H13ClO4S, 3-chlorosulfonyl-4-methyl-benzoic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 240.70 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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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