Used as a chiral auxiliary in asymmetric synthesis, particularly in the preparation of enantiomerically pure amino acids and beta-amino alcohols. It facilitates stereocontrol during alkylation and acylation reactions due to its rigid cyclic structure and ability to direct facial selectivity. Commonly employed in pharmaceutical intermediates synthesis where high enantiomeric excess is required. The auxiliary can be cleaved under mild hydrolytic or reductive conditions, allowing for efficient recovery and reuse in some processes. Its stability under a range of reaction conditions makes it suitable for multi-step synthetic sequences.