Synonyms: 2,7,12,18-Porphinetetrapropionicacid, 3,8,13,17-tetramethyl- (8CI);3,3',3'',3'''-(3,8,13,17-Tetramethylporphyrin-2,7,12,18-tetrayl)tetrapropanoic acid;3-[8,13,18-tris(2-Carboxyethyl)-3,7,12,17-tetramethyl-21,24-dihydroporphyrin-2-yl]propanoic acid;21H,23H-Porphine-2,7,12,18-tetrapropanoicacid, 3,8,13,17-tetramethyl-;