1,1'-Tetramethylenebis(1-methylpiperidinium iodide) (6CI) 3810-53-5 Piperidinium, 1,1'-(1,4-butanediyl)bis(1-methyl-, diiodide (9CI) Piperidinium, 1,1'-tetramethylenebis(1-methyl-, diiodide Tetramine