Used primarily as a key intermediate in organic synthesis, especially in the preparation of sulfonamide-based compounds. It plays an important role in the development of pharmaceuticals and agrochemicals due to its ability to introduce sulfonyl functional groups into complex molecules. Its reactivity makes it valuable for constructing bioactive molecules, including potential drug candidates. Commonly employed in the synthesis of protease inhibitors and other biologically active agents where selective functionalization is required. Also utilized in research settings for modifying peptides and amino groups through selective sulfonylation reactions.