(2S,3R,4S)-5-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2,3,4-trifluoropentanoic acid

This is a stereochemically defined, Fmoc-protected trifluorinated amino acid derivative. Incorporating three strategically placed fluorine atoms, this compound enhances metabolic stability, conformational rigidity, and lipophilicity when used in peptide and peptidomimetic synthesis.