Synonyms: Ferrate(2-),[7-ethenyl-17-formyl-12-(1-hydroxy-5,9,13-trimethyltetradecyl)-3,8,13-trimethyl-21H,23H-porphine-2,18-dipropanoato(4-)-N21,N22,N23,N24]-,dihydrogen; Iron, [dihydrogen3-formyl-8-(1-hydroxy-5,9,13-trimethyltetradecyl)-7,12,17-trimethyl-13-vinyl-2,18-porphinedipropionato(2-)]-(8CI); 21H,23H-Porphine-2,18-dipropanoic acid,7-ethenyl-17-formyl-12-(1-hydroxy-5,9,13-trimethyltetradecyl)-3,8,13-trimethyl-,iron complex; Cytoheme; Hemin a; Hemin a2