Synonyms: Ferrate(2-),[7,12-diethenyl-3,8,13,17-tetramethyl-21H,23H-porphine-2,18-dipropanoato(4-)-N21,N22,N23,N24]bis(pyridine)-,dihydrogen, (OC-6-23)-; Ferrate(2-),[7,12-diethenyl-3,8,13,17-tetramethyl-21H,23H-porphine-2,18-dipropanoato(4-)-kN21,kN22,kN23,kN24]bis(pyridine)-, dihydrogen,(OC-6-23)- (9CI); Iron, [dihydrogen3,7,12,17-tetramethyl-8,13-divinyl-2,18-porphinedipropionato(2-)]bis(pyridine)-(8CI); Iron, [dihydrogen protoporphyrin IX-ato(2-)]bis(pyridine)- (7CI);21H,23H-Porphine-2,18-dipropanoic acid, 7,12-diethenyl-3,8,13,17-tetramethyl-,iron complex; Protohemochrome; Pyridine ferrihemochrome; Pyridine hemochrome;Pyridine hemochromogen; Pyridine protohemochrome