Used in pharmaceutical synthesis as a protected azetidine building block, enabling the construction of bioactive molecules. The Boc group provides amine protection during peptide coupling or heterocycle formation, while the methoxycarbonylmethylene moiety allows further functionalization. Commonly employed in medicinal chemistry for developing small molecule drugs, particularly in protease inhibitors and kinase modulators. Its strained azetidine ring enhances metabolic stability and improves pharmacokinetic properties in drug candidates. Suitable for solid-phase and solution-phase synthesis due to its stability and selective deprotection characteristics.