This compound is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It serves as a protected amino acid derivative, where the Fmoc (fluorenylmethyloxycarbonyl) group acts as a temporary protecting group for the amine functionality. The presence of the 3,4-difluoro substitution on the phenylalanine side chain enhances the peptide's stability and can influence its binding affinity and interactions with biological targets. It is especially valuable in the development of peptide-based drugs, where specific modifications are required to achieve desired pharmacological properties. Additionally, it is utilized in research to study the effects of fluorinated amino acids on peptide structure and function, aiding in the design of novel therapeutic agents.