Used as a key reagent in organic synthesis, particularly in the formation of sulfoxides and sulfones through oxidation reactions. It serves as a nucleophilic sulfinylating agent, enabling the introduction of sulfinyl groups into various organic compounds. Commonly employed in asymmetric synthesis to create chiral sulfoxides, which are important intermediates in pharmaceuticals and agrochemicals. Its lithium salt form enhances solubility in polar solvents, making it suitable for use in homogeneous reaction systems. Additionally, it finds application in polymer chemistry for modifying polymer structures and properties.