Used as a protected intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where the azetidine ring serves as a structural motif. The BOC (tert-butoxycarbonyl) group provides amine protection during multi-step reactions, allowing selective functionalization at other sites. The ethoxy substituent on the azetidine ring influences solubility and reactivity, making it suitable for optimizing pharmacokinetic properties in drug candidates. Commonly employed in medicinal chemistry for constructing nitrogen-containing heterocycles in CNS agents, enzyme inhibitors, and receptor modulators.