Used primarily as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of sulfonamide-based drugs. Its reactive sulfonyl chloride group allows for easy attachment to amines, forming sulfonamides that are common structural motifs in antimicrobial and anti-inflammatory agents. Also employed in agrochemical synthesis, where it contributes to the creation of novel pesticides and herbicides due to its stability and reactivity. Additionally, it serves as a building block in organic chemistry for constructing heterocyclic compounds with potential biological activity. Its derivatives are explored in medicinal chemistry for drug discovery programs targeting enzyme inhibition.