for the following products
1,1,2-Trimethyl-3-(4-sulfobutyl)-1H-benz[e]indolium hydroxide, inner salt | 1,1,2-Trimethyl-3-(4-sulfobutyl)benz[e]indolium, inner salt | 1,1,2-Trimethyl-3-(4-sulfonatobutyl)-1H-benz[e]indoline | 4-(1,1,2-Trimethylbenzo[e]indol-3-ium-3-yl)butane-1-sulfonate and 1-(4-Sulfobutyl)-2,3,3-trimethylbenz[e]indolium betaine
