Used as a chiral ligand in asymmetric catalysis, particularly in transition-metal-catalyzed reactions such as asymmetric hydrogenation and cross-coupling reactions. Its rigid, bidentate structure enables high enantioselectivity and catalytic efficiency. Commonly employed in the synthesis of pharmaceutical intermediates and fine chemicals where control of stereochemistry is critical. Shows particular effectiveness with rhodium and ruthenium complexes, facilitating the production of enantiomerically pure compounds in medicinal chemistry and agrochemical industries.