This compound is primarily used in the field of peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a building block for incorporating specific amino acid residues into peptides. The Fmoc (fluorenylmethyloxycarbonyl) group acts as a protecting group for the amine functionality, ensuring selective reactions during peptide chain assembly. The presence of the 4-cyanophenyl moiety can introduce unique structural and functional properties to the synthesized peptides, making it valuable in designing peptide-based drugs, biomaterials, or probes. Its application is significant in medicinal chemistry and biochemistry for developing targeted therapeutics or studying protein-peptide interactions.