Synonyms: 2,20-Porphinedicarboxylicacid, 18a-(2-carboxyethyl)-7-ethyl-17,18-dihydro-3,8,13,17b-tetramethyl-12-vinyl- (8CI);21H,23H-Porphine-2,20-dicarboxylic acid,18-(2-carboxyethyl)-12-ethenyl-7-ethyl-17,18-dihydro-3,8,13,17-tetramethyl-,(17S-trans)-; Chlorin p6