2-(Dimethylethylammonio)ethyl 3-(dimethylethylammonio)butyrate diiodide 2-Butanaminium, N,N-dimethyl-4-(2-(dimethylethylammonio)ethoxy)-N-ethyl-4-oxo-, diiodide EJ4134500 N,N-Dimethyl-4-(2-(dimethylethylammonio)ethoxy)-N-ethyl-4-oxo-2-butanaminium diiodide