Used as a chiral auxiliary and enantioselective catalyst in organic synthesis, particularly in asymmetric reactions where stereochemical control is critical. Its rigid bicyclic structure and sulfur functionality make it valuable for inducing high enantioselectivity in nucleophilic additions, reductions, and cyclization reactions. Commonly employed in the development of pharmaceutical intermediates and fine chemicals requiring specific optical activity. Also utilized in coordination chemistry to form chiral ligands for transition metal-catalyzed asymmetric transformations.