Used as a chiral ligand in asymmetric catalysis, particularly in transition-metal-catalyzed reactions such as asymmetric hydrogenation and cross-coupling reactions. Its rigid dinaphthyl backbone and stereogenic centers enable high enantioselectivity in the synthesis of chiral molecules, making it valuable in pharmaceutical and fine chemical industries for producing single-enantiomer compounds. The bromine substituents allow further functionalization, enhancing its versatility in catalyst design.