Used in peptide synthesis as a protected amino acid derivative, particularly in solid-phase peptide synthesis (SPPS). The Fmoc group provides protection for the amino group during the synthesis process, while the cyanophenylalanine side chain can be incorporated to introduce specific properties into the peptide, such as fluorescence or structural rigidity. This compound is valuable in the development of bioactive peptides, peptide-based drugs, and materials for biochemical research. Its unique structure allows for the study of peptide interactions, folding, and stability in various applications, including drug discovery and molecular biology.