Synonyms: Verteporfin [USAN:INN];CL 318,952;23H,25H-Benzo[b]porphine-9,13-dipropanoic acid,18-ethenyl-4,4a-dihydro-3,4-bis- (methoxycarbonyl)-4a,8,14,19-tetramethyl-,monomethyl ester,(4R,4aS)-rel-;(+-)-trans-3,4-Dicarboxy-4,4a-dihydro-4a,8,14,19-tetramethyl-18-vinyl-23H,25H-benzo(b)porphine-9,13-dipropionic acid, 3,4,9-trimethyl ester mixture with (+-)-trans-3,4-dicarboxy-4,4a-dihydro-4a,8,14,19-tetramethyl-18-vinyl-23H,25H-benzo(b)porphine-9,13-dipropionic acid, 3,4,13-trimethyl ester;23H,25H-Benzo(b)porphine-9,13-dipropanoic acid, 18-ethenyl-4,4a-dihydro-3,4-bis(methoxycarbonyl)-4a,8,14,19-tetramethyl-, monomethyl ester, trans-;Visudyne;Visudyne (TN);Verteporfin (JAN/USAN);