Used primarily in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It serves as a building block for introducing the 4-fluorophenylalanine residue into peptides, which is valuable in studying protein structure and function due to the unique properties of the fluorine atom. The Fmoc group protects the amino group during synthesis, ensuring selective reactions. This chemical is also employed in the development of peptide-based drugs, where fluorinated amino acids can enhance metabolic stability and bioavailability. Additionally, it finds applications in research focused on enzyme-substrate interactions and receptor binding studies, leveraging the fluorine atom's ability to act as a probe in NMR spectroscopy.