4,4'-Bipyridinium,1,1'-bis[(dimethylcarbamoyl)methyl]-, diiodide (8CI); 4,4'-Bipyridinium,1,1'-bis[2-(dimethylamino)-2-oxoethyl]-, diiodide (9CI);1,1'-Bis(N-dimethylcarbamylmethyl)-4,4'-bipyridylium diiodide
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