1,3,3-Trimethyl-2-(2-(2-methyl-1H-indol-3-yl)ethenyl)-3H-indolium sulfate (2:1) 1,3,3-Trimethyl-2-(2-(2-methyl-1H-indol-3-yl)vinyl)-3H-indolium sulphate (2:1) 3H-Indolium, 1,3,3-trimethyl-2-(2-(2-methyl-1H-indol-3-yl)ethenyl)-, sulfate (2:1) 41062-71-9 EINECS 255-197-8