Used as a chiral auxiliary and intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and fine chemicals. Its rigid five-membered ring structure with defined stereochemistry makes it valuable in asymmetric synthesis, where it helps control the formation of specific enantiomers. Commonly employed in the development of beta-amino acids and peptide mimetics, it supports the creation of biologically active molecules with enhanced stability and selectivity. Also finds use in the synthesis of protease inhibitors and other medicinal agents where stereochemical precision is critical.