2-Ala-4-(4-azido-phe)-met-enkephalin 98749-66-7 Enkephalin-met, ala(2)-4-azido-phe(4)- Enkephalin-met, alanyl(2)-4-azidophenylalanine(4)- MEAZP Met-enkephalin, ala(2)-4-azido-phe(4)- Methionine-enkephalin, ala(2)-4-azido-phe(4)-