Primarily used in organic synthesis, this compound serves as a key intermediate in the production of various sulfonamide derivatives. Its sulfonyl chloride group is highly reactive, making it valuable for introducing sulfonamide functionalities into target molecules. This is particularly useful in the development of pharmaceuticals, where sulfonamides are often incorporated for their antibacterial, antifungal, or diuretic properties. Additionally, it finds application in the synthesis of dyes, agrochemicals, and other specialty chemicals, where the sulfonamide group can enhance stability or biological activity. Its role in cross-coupling reactions also makes it relevant in materials science for creating advanced polymers or functionalized surfaces.