(SP-4-1)-((4,4',4'',4'''-(21H,23H-Porphine-5,10,15,20-tetrayl)tetrakis(1-methylpyridiniumato))(2)-N21,N22,N23,N24)copper(4+) 48242-70-2 Copper tetrakis(N-methyl-4-pyridyl)porphine Copper(4+), ((4,4',4'',4'''-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis(1-methylpyridiniumato))(2)-N21,N22,N23,N24)-, (SP-4-1)-