1,4-Benzenedimethanaminium, 2,3,5,6-tetrachloro-N,N,N,N',N',N',-hexamethyl-, diiodide 1,4-Bis(dimethylaminomethyl)-2,3,5,6-tetrachlorobenzene bis(methiodide) 2,3,5,6-Tetrachloro-N,N,N,N',N',N'-hexamethyl-1,4-benzenedimethanaminium diiodide 55405-21-5