Used primarily as a sulfonating agent in organic synthesis, enabling the introduction of sulfonyl groups into various substrates. Its reactivity makes it valuable for creating sulfonate esters and sulfonamides, which are key intermediates in pharmaceuticals and agrochemicals. The compound is particularly useful in the development of functionalized alkynes for further coupling reactions, supporting the construction of complex molecular architectures. Due to its sensitivity to moisture, it is typically handled under anhydrous conditions in controlled environments.