Used as a chiral auxiliary in asymmetric synthesis, particularly in enantioselective alkylation and aldol reactions. Its rigid oxazolidinone ring helps control stereochemistry, making it valuable in the preparation of optically active pharmaceuticals and fine chemicals. Commonly employed in the synthesis of complex natural products and beta-lactam antibiotics due to its ability to direct facial selectivity in nucleophilic additions. After serving its role, it can be cleaved under mild conditions without racemization, preserving the desired stereochemical integrity of the product.