Used as a key chiral intermediate in the synthesis of β-lactam antibiotics, particularly in the production of carbapenem-class antibiotics such as meropenem and ertapenem. Its stereochemistry enables efficient construction of the core β-lactam ring system, enhancing the potency and stability of the final antibiotic. The hydrochloride salt form improves stability and handling during pharmaceutical manufacturing. Also employed in the development of enzyme inhibitors and other bioactive molecules requiring a constrained azetidinone scaffold.