Used as a chiral auxiliary in asymmetric synthesis, enabling the selective formation of stereocenters in complex organic molecules. Its structure facilitates high enantioselectivity in alkylation and aldol reactions, making it valuable in the synthesis of pharmaceuticals and fine chemicals. The auxiliary is easily introduced and removed without racemization, allowing for efficient recovery and reuse in multi-step synthetic routes. Commonly applied in the preparation of beta-amino alcohols and other bioactive intermediates.