Used as a key intermediate in the synthesis of β-lactam antibiotics, particularly in the production of carbapenem and penem classes. Its protected amine and ester functionalities allow selective reactions in multi-step organic syntheses. The compound is valuable in pharmaceutical development for constructing bicyclic β-lactam structures with potent antimicrobial activity. It also serves in the preparation of enzyme inhibitors and other bioactive molecules requiring a rigid, four-membered ring scaffold.