Synonyms: 2,7,12,18-Porphinetetrapropionicacid, 3,8,13,17-tetrakis(carboxymethyl)-, octamethyl ester (8CI);21H,23H-Porphine-2,7,12,18-tetrapropanoic acid,3,8,13,17-tetrakis(2-methoxy-2-oxoethyl)-, tetramethyl ester (9CI);Uroporphyrin III octamethyl ester (6CI,7CI)