21H,23H-Porphine-2,18-dipropanoic acid, 7,12-diethenyl-3,8,13,17-tetramethyl-, disodium salt 50865-01-5 Disodium protoporphyrin Dojin PM NSC177389 Palepron Protoporphyrin IX, disodium salt Protoporphyrin sodium Protoporphyrin sodium salt Protoporphyrin, disodium salt