Used in medicinal chemistry as a building block for synthesizing protease inhibitors and other bioactive molecules. The Boc-protected azetidine ring provides structural rigidity, while the thiol group allows for further functionalization, such as disulfide bond formation or metal coordination. Commonly employed in the development of enzyme inhibitors targeting viral or metabolic diseases. Also utilized in peptide mimetics to enhance stability and binding affinity. Suitable for solid-phase synthesis and compatible with various coupling reagents in multi-step organic syntheses.