Used primarily in peptide synthesis, this compound serves as a building block for introducing cyclopropane rings into peptide chains. The Fmoc group provides protection for the amino group during the synthesis process, ensuring selective reactions at other sites. It is particularly valuable in creating constrained peptides, which are used to study protein-protein interactions and develop therapeutic agents. Its cyclopropane structure imparts rigidity to the peptide backbone, enhancing stability and mimicking specific conformations in biological targets.