86810-21-1 L-Phenylalaninamide, N-((1,1-dimethylethoxy)carbonyl)-D-leucyl-N-(2-hydroxyethyl)- N-Tertiary-butyloxycarbonyl-leucyl-phenylalanine-ethanolamide N-tert-Butyloxycarbonyl-D-leucyl-L-phenylalanine-ethanolamide t-Boc-D-leu-L-phe-EA tert-Boc-leu-phe-EA