1-(Fmoc-amino)cyclopropanecarboxylic acid is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). The Fmoc (fluorenylmethyloxycarbonyl) group serves as a protective group for the amino functionality, allowing for selective deprotection during the synthesis process. This compound is valuable for introducing cyclopropane rings into peptide structures, which can enhance the stability and biological activity of the peptides. It is also employed in the development of peptidomimetics and bioactive molecules, where the cyclopropane ring contributes to conformational rigidity and improved binding affinity. Additionally, it finds applications in medicinal chemistry for designing drug candidates with specific structural and functional properties.