DL-LEU-GLY-DL-PHE

H-DL-LEU-GLY-DL-PHE-OH

Leucylglycylphenylalanine

DL-LEUCYL-GLYCYL-DL-PHENYLALANINE

D-Leu-Gly-D-Phe-OH/D-Leu-Gly-L-Phe-OH/L-Leu-Gly-D-Phe-OH/L-Leu-Gly-L-Phe-OH,(1:1:1:1)