(SP-4-2)-[7,12-Diethenyl-3,8,13,17-tetramethyl-21H,23H-porphine-2,18-dipropanoato(4-)-N21,N22,N23,N24]ferrate(2-) dihydrogen 1,3,5,8-tetramethyl-2,4-divinylporphine-6,7-dipropionic acid ferrous complex 104414-01-9 21H,23H-Porphine-2,18-dipropanoic acid, 7,12-diethenyl-3,8,13,17-tetramethyl-, iron complex Fe2+ 5-coordinate nitrosyl complex Ferrate(2-), [7,12-diethenyl-3,8,13,17-tetramethyl-21H,23H-porphine-2,18-dipropanoato(4-)-N21,N22,N23,N24]-, (SP-4-2)- (9CI) [dihydrogen 3,7,12,17-tetramethyl-8,13-divinyl-2,18-porphinedipropionato(2-)]-iron ferroheme ferroprotoporphyrin hem protoheme protoheme IX protoporphyrin ix containing fe reduced hematin