Used as a chiral auxiliary in asymmetric synthesis, particularly in the preparation of enantiomerically pure amines and amino acids. Its structure enables high stereoselectivity in nucleophilic addition reactions, especially in titanium-mediated aldol and Mannich-type reactions. Commonly employed in pharmaceutical synthesis where control of stereochemistry is critical, such as in the development of bioactive molecules and drug intermediates. The sulfinamide group can be easily removed or transformed after serving its directing role, making it valuable in multi-step synthetic routes.