Synonyms: 2,18-Porphinedipropionicacid, 7,12-bis(1-hydroxyethyl)-3,8,13,17-tetramethyl-, dihydrochloride (8CI);21H,23H-Porphine-2,18-dipropanoic acid,7,12-bis(1-hydroxyethyl)-3,8,13,17-tetramethyl-, dihydrochloride (9CI);Hematoporphyrin IX dihydrochloride; Hematoporphyrin dihydrochloride