This compound is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a building block for introducing modified phenylalanine residues into peptide chains. The Fmoc group protects the amino group during synthesis, ensuring selective coupling reactions. The fluorine substitution at the 3-position (meta) of the phenyl ring can influence the peptide's biological activity, stability, and binding affinity, making it valuable in designing peptides for pharmaceutical research. It is commonly applied in the development of peptide-based drugs, enzyme inhibitors, and probes for studying protein interactions. Its use is critical in creating peptides with enhanced properties for therapeutic and diagnostic applications.