3,3,6,6-tetramethyl-1-oxido-4,5-dihydropyridazin-1-ium;54143-34-9;Pyridazine, 3,4,5,6-tetrahydro-3,3,6,6-tetramethyl-, 1-oxide;Pyridazine, 3,4,5,6-tetrahydro-3,3,6,6-tetramethyl-1-oxide
3,3,6,6-tetramethyl-1-oxido-4,5-dihydropyridazin-1-ium