Used primarily as an intermediate in organic synthesis, this chemical plays a crucial role in the production of various pharmaceuticals and agrochemicals. Its sulfonyl chloride group is highly reactive, making it valuable for introducing sulfonamide functionalities into target molecules. This is particularly important in the development of drugs with antibacterial, antiviral, or anti-inflammatory properties. Additionally, it is employed in the synthesis of specialty chemicals and dyes, where its chlorophenyl group contributes to the desired chemical properties of the final product. Its applications are largely confined to laboratory and industrial settings due to its reactivity and potential hazards.