Synonyms: Heme a3;AC1NURIP;18535-39-2;3-[(17Z)-7-ethenyl-12-(1-hydroxy-5,9,13-trimethyltetradecyl)-3,8,13-trimethyl-17-(oxidomethylidene)-18-(3-oxido-3-oxopropyl)porphyrin-21-id-2-yl]propanoate; hydron; iron(2+);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