Used primarily in organic synthesis, it serves as a key reagent for introducing the thiocarbonyl functional group into molecules. It is particularly valuable in the preparation of thiocarbonates, thioesters, and thiocarbamates, which are intermediates in the production of pharmaceuticals and agrochemicals. Additionally, it is employed in the modification of peptides and proteins, aiding in the study of biochemical processes. Its reactivity with amines and alcohols makes it useful in cross-coupling reactions, enabling the construction of complex organic frameworks.