Used as a resolving agent in the separation of racemic mixtures, particularly for chiral amines and alcohols. It forms diastereomeric salts with enantiomers, allowing their purification through crystallization. Commonly applied in pharmaceutical synthesis to obtain optically pure compounds. Also serves as a chiral catalyst or additive in asymmetric synthesis. Its effectiveness in enantiomeric resolution makes it valuable in producing single-enantiomer drugs and fine chemicals.