1818-68-4 2,18-Porphinedipropionic acid, 3,8,13,17-tetramethyl-7,12-divinyl- (8CI) 21H,23H-Porphine-2,18-dipropanoic acid, 7,12-diethenyl-3,8,13,17-tetramethyl- 3,3'-(3,7,12,17-Tetramethyl-8,13-divinylporphine-2,18-diyl)di(propionic acid) 37188-04-8 42183-71-1 50312-31-7 50865-01-5 553-12-8 61320-51-2 63872-77-5 68034-48-0 75440-82-3 75460-41-2 75599-49-4 75750-98-0 EINECS 209-033-7 NSC 2632 Ooporphyrin PROTOPORPHYRIN PROTOPORPHYRIN (PP) Protoporphyrin IX Protoporphyrin IX (VAN) Protoporpyrin IX