2,2',2'',2'''-(21H,23H-Porphine-5,10,15,20-tetrayl)tetrakis(1-methylpyridinium) 2-Tmpyp 59728-89-1 Pyridinium, 2,2',2'',2'''-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis(1-methyl- Tetra(2-N-methylpyridyl)porphine meso-Tetra(2-N-methylpyridyl)porphine