86370-03-8 L-Lysine, N2-(N-(N-L-lysyl-L-tryptophyl)glycyl)-, 1,1-dimethylethyl ester Lys-trp-gly-lys O-tbu Lysly-tryptophyl-glycyl-lysine O-tert-butyl ester Lysyl-tryptophenyl-glycyllysine O-tert-butyl ester O-tert-Butyl lysyl-tryptophyl-glycyl-lysinate