Used as a chiral ligand in asymmetric catalysis, particularly in enantioselective transformations such as hydrogenation and cross-coupling reactions. Its rigid dinaphthyl backbone and phosphorus center with defined stereochemistry make it effective for inducing high enantioselectivity in the synthesis of pharmaceutical intermediates and fine chemicals. Commonly employed in transition metal complexes, especially with rhodium or ruthenium, to facilitate the production of single-enantiomer products in academic and industrial organic synthesis.