128631-86-7 FP-1, HIV HIV Envelope protein gp41 (519-541) L-Alanyl-L-valylglycyl-L-isoleucylglycyl-L-alanyl-L-leucyl-L-phenylalanyl-L-leucylglycyl-L-phenylalanyl-L-leucylglycyl-L-alanyl-L-alanylglycyl-seryl-L-threonyl-L-methionylglycyl-L-alanyl-L-arginyl-L-serinamide L-Serinamide, L-alanyl-L-valylglycyl-L-isoleucylglycycl-L-alanyl-L-leucyl-L-phenylalanyl-L-leucylglycyl-L-phenylalanyl-L-leucylglycyl-L-alanyl-L-alanylglycyl-L-seryl-L-threonyl-L-methionylglycyl-L-alanyl-L-arginyl- L-Serinamide, L-alanyl-L-valylglycyl-L-isoleucylglycyl-L-alanyl-L-leucyl-L-phenylalanyl-L-leucylglycyl-L-phenylalanyl-L-leucylglycyl-L-alanyl-L-alanylglycyl-L-seryl-L-threonyl-L-methionylglycyl-L-alanyl-L-arginyl-