(1,1'-(1,2-Diethylethylene)di-p-phenylene)bis(1-methylpyrrolidinium), dibenzenesulfonate 15209-47-9 Dibenzosulphomethylate-p,p'-bis(N-pyrrolidinyl-meso-3,4-diphenyl)hexane IEM 574 Pyrrolidinium, 1,1'-((1,2-diethyl-1,2-ethanediyl)di-4,1-phenylene)bis(1-methyl-, (R-(R*,S*))-, dibenzenesulfonate Pyrrolidinium, 1,1'-((1,2-diethyl-1,2-ethanediyl)di-p-phenylene)bis(1-methyl-, dibenzenesulfonate, meso-