Synonyms: Imidazolium compounds, 2-(C17 and C17-unsatd. alkyl)-1-(2-(C18 and C18-unsatd. amido)ethyl)-4,5-dihydro-1-methyl, Me sulfates;Imidazolium compounds, 2-(C17 and C17-unsatd. alkyl)-1-(2-(C18 andC18-unsatd. amido)ethyl)-4,5-dihydro-1-methyl, Me sulfates;1,2-diheptadecyl-3-methyl-4,5-dihydro-1H-imidazol-3-ium methyl sulfate