Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of protease inhibitors and other biologically active molecules. Its structure allows for selective functionalization, making it valuable in medicinal chemistry for constructing complex drug candidates. Commonly employed in solid-phase and solution-phase peptide synthesis due to the presence of both carboxylic acid and protected amine functionalities. Also utilized in the preparation of small molecule inhibitors targeting enzymes involved in metabolic and signaling pathways.