(D-Ala(2)-mephe(4)-gly-ol(5))enkephalin 2-Ala-4-mephe-5-gly-enkephalin 78123-71-4 Ala(2)-mephe(4)-gly-ol(5) enkephalin DAGO DAMGE DAMGO Dagol Enkephalin, Ala(2)-MePhe(4)-Gly-ol(5)- Enkephalin, ala(2)-mephe(4)-gly(5)- Enkephalin, alanyl(2)-methylphenylalanyl(4)-glycine(5)- L-Phenylalaninamide, L-tyrosyl-D-alanylglycyl-N-(2-hydroxyethyl)-Nalpha-methyl- RX 783006 Tyr-ala-gly-(nme)phe-gly-ol glyol