1-Butyl-3-methylimidazolium dicyanamide448245-52-132 % similar (Perfluoro-N-propyl)phenyliodonium trifluoromethanesulfonate77758-79-331 % similar 5-(Trifluoromethyl)dibenzothiophenium trifluoromethanesulfonate129946-88-931 % similar (4-Methoxyphenyl)diphenylsulfonium triflate116808-67-430 % similar