This compound is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) as a building block. It is employed to introduce 2,4-difluoro-L-homophenylalanine residues into peptide chains, which can enhance the stability and biological activity of the synthesized peptides. The Fmoc group serves as a protective group for the amino acid during the synthesis process, ensuring selective deprotection and coupling steps. It is especially useful in the development of peptide-based drugs, where specific modifications like fluorination can improve metabolic stability, binding affinity, or other pharmacological properties. Additionally, it finds applications in research focused on studying peptide-protein interactions and designing bioactive peptides with tailored functionalities.