N-Fmoc-5-fluoro-L-tryptophan is a protected form of 5-fluoro-L-tryptophan, a compound that selectively binds to human serum albumin (HSA), the most abundant protein in the circulatory system. 5-Fluoro-L-tryptophan is also a derivative of L-Tryptophan is an amino acid that is a metabolic precursor of Norepinephrine (N674500) and Serotonin (S274980).