Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity. Its imidazolidinone structure supports the formation of peptidomimetics and other heterocyclic compounds, making it valuable in medicinal chemistry for drug design. Commonly employed in asymmetric synthesis to introduce stereochemical control, especially in the preparation of biologically active molecules such as protease inhibitors or central nervous system agents. The tert-butyl ester protection allows for selective deprotection and further functionalization in multi-step synthetic routes.