Synonyms: 4,5-dihydro-1-(2-hydroxyethyl)-3-(2-hydroxy-3-sulphonatopropyl)-2-undecyl-1H-imidazolium, monosodium salt;1H-Imidazolium, 4,5-dihydro-1-(2-hydroxyethyl)-3-(2-hydroxy-3-sulfopropyl)-2-unde- cyl-, hydroxide, inner salt, monosodium salt;1H-Imidazolium, 4,5-dihydro-1-(2-hydroxyethyl)-3-(2-hydroxy-3-sulfopropyl)-2-undecyl-, inner salt, monosodium salt;1H-Imidazolium, 4,5-dihydro-1-(2-hydroxyethyl)-3-(2-hydroxy-3-sulfopropyl)-2-undecyl-, inner salt, sodium salt (1:1);4,5-Dihydro-1-(2-hydroxyethyl)-3-(2-hydroxy-3-sulphonatopropyl)-2-undecyl-1H-imidazolium, monosodium salt;Einecs 268-242-1