Used in organic synthesis as a key intermediate for the preparation of sulfonamides, which are important in the development of pharmaceuticals and agrochemicals. It is particularly valuable in the synthesis of compounds with potential biological activity, such as inhibitors or receptor modulators. The sulfonyl chloride group allows for easy functionalization, making it a versatile building block in medicinal chemistry. Additionally, it can be employed in the creation of dyes, pigments, and other specialty chemicals due to its reactive nature and ability to form stable sulfonated derivatives.