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H-LEU-PHE-OH H-LEU-LYS (Z) - OH L-LEUCYL-L-ALANINE Ethyl L-leucinate hydrochloride Methyl L-leucinate hydrochloride H-LEU-GLY-OH H-GAMMA-GLU-TYR-OH H-GAMMA-GLU-VAL-OH N-TRIFLUOROACETYL-L-G-GLUTAMYL-L-CYSTEINE DIMETHYL ESTER, (2-2') DISULPHIDE N-(N-TRIFLUOROACETYL-L-G-GLUTAMYL)-L-CYSTEINE DIMETHYL ESTER