Used as a chiral auxiliary in asymmetric synthesis, particularly in the preparation of enantiomerically pure amines and amino derivatives. Its structure enables high stereoselectivity in nucleophilic addition reactions, making it valuable in pharmaceutical synthesis where specific enantiomers are required for optimal biological activity. Commonly employed in the development of active pharmaceutical ingredients (APIs) due to its ability to direct asymmetric transformations and then be cleanly removed under mild conditions.