Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of beta-lactam antibiotics and other biologically active compounds. Its reactivity allows for the introduction of azetidine moieties into larger molecules, which can enhance metabolic stability and binding affinity in drug candidates. Commonly employed in medicinal chemistry for constructing heterocyclic frameworks. Also utilized in the preparation of enzyme inhibitors and receptor modulators due to its ability to form covalent bonds with nucleophilic amino acid residues in proteins.