Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other biologically active molecules. Its protected amine group allows for selective reactions in multi-step organic syntheses. The rigid azetidine ring contributes to improved metabolic stability and bioavailability in drug candidates. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its ability to modulate molecular conformation and polarity.