1-Ethyl-2,3-dimethylimidazolium bromide98892-76-3100 % similar 1-Ethyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide174899-90-257 % similar 1,2-Dimethyl-3-propylimidazolium bis(trifluoromethylsulfonyl)imide169051-76-742 % similar 1-Ethyl-3-methylimidazolium bromide65039-08-938 % similar