2-(2-((4-Ethoxyphenyl)amino)vinyl)-1,3,3-trimethyl-3H-indolium hydrogen sulphate 3H-Indolium, 2-(2-((4-ethoxyphenyl)amino)ethenyl)-1,3,3-trimethyl, bisulfate 3H-Indolium, 2-(2-((4-ethoxyphenyl)amino)ethenyl)-1,3,3-trimethyl-,sulfate (1:1) 70353-84-3 EINECS 274-577-4