Used as a chiral auxiliary in asymmetric synthesis, particularly in the preparation of enantiomerically pure amines and amino acids. Its structure allows for high stereoselectivity in addition reactions, such as aldol or Mannich-type reactions, where it controls the formation of new chiral centers. After the desired transformation, the auxiliary can be cleaved under mild conditions, leaving the target molecule with minimal racemization. Commonly employed in pharmaceutical synthesis for building complex, optically active intermediates.