Used as a chiral ligand in asymmetric catalysis, particularly in transition metal-catalyzed reactions such as hydrogenation and cross-coupling. Its rigid dinaphthyl backbone and phosphorus center provide high enantioselectivity, making it valuable in the synthesis of optically active pharmaceuticals and fine chemicals. Effective in palladium and rhodium complexes where stereocontrol is critical. Also employed in the development of enantioselective transformations in academic and industrial research settings.