Used as a key intermediate in organic synthesis, particularly in the production of sulfonamide derivatives, which are essential in pharmaceuticals and agrochemicals. It plays a role in the development of antibacterial and antifungal agents due to its sulfonyl chloride group, which facilitates the formation of sulfonamides. Additionally, it is employed in the synthesis of dyes and pigments, contributing to the creation of vibrant and stable colorants for various industrial applications. Its reactivity also makes it valuable in research for designing novel compounds with potential biological activity.