Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of peptide-based drugs and bioactive molecules. Its cyclopropane core with protected amino and carboxylic acid functionalities allows for selective coupling reactions, making it valuable in solid-phase and solution-phase peptide synthesis. Commonly employed in medicinal chemistry for constructing constrained amino acid analogs, which can enhance metabolic stability and receptor selectivity in drug candidates. Also utilized in the preparation of protease inhibitors and other therapeutic agents where structural rigidity improves pharmacokinetic properties.