2-Met-4-(4-nitro)-phe-5-pronh2-enkephalin 98311-64-9 BW 942C BW-942-C Enkephalin, met(2)-4-nitro-phe(4)-pronh2(5)- Enkephalin, methionyl(2)-4-nitrophenylalanyl(4)-prolinamide(5)- L-Prolinamide, L-tyrosyl-gamma-(methylsulfinyl)-D-alpha-aminobutyrylglycyl-4-nitro-L-phenylalanyl-, monoacetate (salt) Tyr-met-O-gly-4-No2-phe-pro-NH2 Tyrosyl-methionyl-O-glycyl-para-nitro-phenylalanyl-prolinamide