Widely used in organic synthesis, especially in the pharmaceutical industry, as a key intermediate for preparing sulfonamide-based drugs. Its reactivity allows for efficient coupling with amines to form sulfonamides, which are common structural motifs in bioactive molecules. It is particularly valuable in the development of agrochemicals and medicinal compounds where fluorinated and brominated aromatic rings enhance metabolic stability and binding affinity. The compound also serves in the synthesis of dyes and functional materials due to its ability to introduce sulfonyl chloride functionality into complex molecules.