Widely used as a chiral ligand in asymmetric catalysis, this compound plays a key role in enantioselective transformations, particularly in rhodium- and ruthenium-catalyzed asymmetric hydrogenation reactions. It is highly effective in the synthesis of chiral amines, amino acids, and other pharmaceutical intermediates where high enantiomeric excess is required. Due to its rigid xanthene backbone and well-defined chiral environment, it enhances stereocontrol in C–H activation and cross-coupling reactions. Its sulfinamide and phosphine functional groups allow for strong coordination to transition metals, making it valuable in industrial and academic research for developing enantiopure drugs and fine chemicals.