This chemical is primarily used in organic synthesis as an intermediate for the production of various pharmaceuticals and agrochemicals. Its chlorosulfonyl group makes it a valuable reagent for introducing sulfonamide functionalities into molecules, which are often found in drugs with antibacterial, antiviral, or anti-inflammatory properties. Additionally, it can be utilized in the development of dyes and pigments due to its ability to form stable sulfonated compounds. Its application extends to research laboratories, where it serves as a building block for creating complex organic compounds with potential biological activity.