Used primarily as a sulfonating agent in organic synthesis, enabling the introduction of sulfonyl groups into various substrates. It is particularly valuable in the preparation of sulfonamides, which are key motifs in pharmaceuticals and agrochemicals due to their biological activity. The compound's reactivity makes it suitable for modifying amines and alcohols under controlled conditions, facilitating the development of complex molecules in drug discovery and medicinal chemistry. Its utility extends to peptide chemistry and the synthesis of enzyme inhibitors where selective functionalization is required.