Used as a versatile reagent in organic synthesis, particularly for the introduction of methylthio groups into molecules. It serves as a sulfur transfer agent in the preparation of sulfides and disulfides, which are important in pharmaceuticals and agrochemicals. Its trimethylsilyl group enhances reactivity and solubility in nonpolar solvents, making it effective in mild reaction conditions. Commonly employed in the synthesis of biologically active compounds where controlled sulfur incorporation is required. Also utilized in the development of specialty materials, including ligands for catalysis and precursors for sulfur-containing polymers.