4,4'-(15,20-Diphenyl-21H,23H-porphine-5,10-diyl)bis(1-methylpyridinium) 71183-09-0 Pyridinium, 4,4'-(15,20-diphenyl-21H,23H-porphine-5,10-diyl)bis(1-methyl- cis-meso-Bis(N-methyl-4-dipyridiniumyl)diphenyl porphyrin cis-meso-Bis(N-methyl-4-pyridinium)diphenyl porphyrin