Used as a chiral auxiliary in asymmetric synthesis, particularly in enantioselective carbon-carbon bond formation reactions. It facilitates stereochemical control in aldol reactions and alkylations, enabling the production of optically active intermediates important in pharmaceutical synthesis. The rigid bicyclic structure enhances stereoselectivity, and the auxiliary can be cleaved and recycled after serving its purpose. Its application is especially valuable in the development of complex natural products and bioactive molecules requiring high enantiomeric purity.