3,3',3'',3'''-(21H,23H-Porphine-5,10,15,20-tetrayl)tetrakis(1-methylpyridinium) 3-Tmpyp 59728-91-5 Pyridinium, 3,3',3'',3'''-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis(1-methyl- Tetra(3-N-methylpyridyl)porphine meso-Tetra(3-N-methylpyridyl)porphine