Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals. It plays a crucial role in the production of sulfonamide-based drugs, which are widely used as antibiotics, diuretics, and anti-inflammatory agents. Additionally, it is employed in the development of dyes and pigments due to its reactivity with various organic compounds. Its sulfonyl chloride group makes it valuable in creating sulfonated polymers, which are utilized in water treatment and ion-exchange resins. The compound also finds application in research laboratories for studying chemical reactions involving sulfonylation processes.