((4-(Fluoro-18F)-3-iodophenyl)methyl)guanidine (4-(18F)Fluoro-3-iodobenzyl)guanidine (4-Fluoro-3-iodobenzyl)guanidine 159719-55-8 4-Fibg Guanidine, ((4-(fluoro-18F)-3-iodophenyl)methyl)-