This compound is primarily used in peptide synthesis as a protected amino acid derivative. It serves as a building block for constructing peptides, particularly in solid-phase peptide synthesis (SPPS). The fluorenylmethoxycarbonyl (Fmoc) group acts as a protective moiety for the amino group, ensuring selective reactions during peptide chain assembly. The presence of the cyano group on the phenyl ring can introduce specific structural or functional properties into the final peptide, such as enhanced binding affinity or stability. It is commonly employed in pharmaceutical research and development for creating peptide-based drugs, biomaterials, and probes for biochemical studies.