Used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS), as a building block for creating peptides with specific sequences. The Fmoc group provides protection for the amino group during synthesis, ensuring controlled and precise peptide chain elongation. It is commonly employed in the production of bioactive peptides, pharmaceutical compounds, and research peptides for studying protein interactions and functions. Its application is critical in the development of therapeutic agents and in biochemical research for understanding peptide behavior and structure-activity relationships.