Used as a chiral auxiliary and resolving agent in asymmetric synthesis, particularly in the preparation of enantiomerically pure amines and amino derivatives. Its stereoselective properties make it valuable in pharmaceutical intermediates synthesis where chirality affects biological activity. Commonly employed in the resolution of racemic mixtures through diastereomeric salt formation, enabling separation of enantiomers. Also utilized in catalysis and as a building block for chiral ligands in enantioselective transformations.