1-(2-Carboxylatoethyl)-2-hexyl-4,5-dihydro-3-(2-hydroxyethyl)-1H-imidazolium 1-Hydroxyethyl-2-hexylimidazolinium-3-propanoic acid, inner salt 1H-Imidazolium, 1-(2-carboxyethyl)-2-hexyl-4,5-dihydro-3-(2-hydroxyethyl)-, inner salt 68991-92-4 EINECS 273-656-0