Primarily used in the synthesis of pharmaceuticals and agrochemicals, this compound serves as a key intermediate. It is particularly valuable in the production of sulfonamide derivatives, which are widely employed as antibiotics and antifungal agents. Additionally, it finds application in the manufacturing of dyes and pigments, where its reactive chlorosulfonyl group facilitates the introduction of sulfonic acid functionalities. In organic synthesis, it is utilized for the preparation of various benzoyl chloride derivatives, which are essential in the development of polymers and specialty chemicals. Its reactivity makes it a crucial component in the creation of complex molecules for industrial and research purposes.