Used as a key chiral auxiliary and intermediate in asymmetric synthesis, particularly in the development of pharmaceuticals. Its stereochemical stability and ability to direct selective transformations make it valuable in constructing complex organic molecules. Commonly employed in enantioselective carbon-carbon bond-forming reactions, it helps achieve high optical purity in active pharmaceutical ingredients. Also utilized in agrochemical synthesis where specific stereochemistry is required for biological activity. Its sulfoximine group acts as a directing group in metal-catalyzed reactions, enabling functionalization at specific molecular sites.