Used as a key intermediate in the synthesis of pharmaceutical peptides, particularly in the preparation of protease inhibitors. Its chiral center and protected amine group make it valuable for solid-phase peptide synthesis, where it helps maintain stereochemical integrity during coupling reactions. The fluorenylmethyloxycarbonyl (Fmoc) group allows for mild deprotection conditions, compatible with sensitive peptide sequences. Commonly employed in the development of antiviral and anticancer agents requiring specific stereochemistry and fluorinated aromatic moieties for enhanced binding and metabolic stability.