Used as a chiral ligand precursor in asymmetric catalysis, particularly in transition metal-catalyzed reactions such as enantioselective hydrogenation and cross-coupling. Its rigid dinaphthyl backbone and phosphorus center provide excellent stereocontrol, making it valuable in the synthesis of optically active pharmaceuticals and fine chemicals. The trifluoromethanesulfonamide group enhances stability and influences electronic properties, improving catalytic efficiency. Commonly employed in palladium- and rhodium-based systems where high enantioselectivity is required.