117397-69-0 Enk-P8 Enkephalin-leu, gly-pro-(lys-pro-pro-pro)2-ome- Gly-pro-(lys-pro-pro-pro)2-ome-leu-enkephalin L-Proline, L-tyrosylglycylglycyl-L-phenylalanyl-L-leucylglycyl-L-prolyl-L-lysyl-L-prolyl-L-prolyl-L-prolyl-L-lysyl-L-prolyl-L-prolyl-, methyl ester Leucine-enkephalin, glycyl-prolyl-(lysyl-prolyl-prolyl-proyly)2-methoxy- Yggflgp(kppp)2-ome