Synonyms: 1H-Imidazolium, 3-(carboxymethyl)-4,5-dihydro-1-(2-hydroxyethyl)-2-undecyl-, sodium salt (1:1);2-Imidazolinium, 1-hydroxyethyl-2-undecyl-3-carboxymethyl-, sodium salt;1-(Carboxylatomethyl)-4,5-dihydro-3-(2-hydroxyethyl)-2-undecyl-1H-imidazolium, monosodium salt;1H-Imidazolium, 1-(carboxymethyl)-4,5-dihydro-3-(2-hydroxyethyl)-2-undecyl-, monosodium salt;acetate, 2-[4,5-dihydro-1-(2-hydroxyethyl)-2-undecyl-1H-imidazolium-3-yl]-, sodium salt (1:1)