Used as a chiral ligand in asymmetric catalysis, particularly in transition-metal-catalyzed reactions such as hydrogenation and cross-coupling. Its rigid backbone and stereogenic centers enable high enantioselectivity in the synthesis of optically active compounds. Commonly employed in pharmaceutical and fine chemical manufacturing where precise stereochemical control is critical. The phosphine oxide group can be reduced to the corresponding phosphine for use in palladium- or rhodium-based catalytic systems. Exhibits good stability and solubility in common organic solvents, facilitating its handling and application in various reaction conditions.