4-(4'-Bromo phe)-met-enkephalin 89705-57-7 Enkephalin-met, 4'-bromo-phe(4)- Enkephalin-met, 4'-bromophenylalanine(4)- L-Methionine, N-(4-bromo-N-(N-(N-L-tyrosylglycyl)glycyl)-L-phenylalanyl)- MEBP Met-enkephalin, 4'-bromo-phe(4)- Methionine-enkephalin, 4'-bromo-phe(4)-