1-(Carboxylatomethyl)-2-heptyl-4,5-dihydro-1-(2-hydroxyethyl)-1H-imidazolium 1H-Imidazolium, 1-(carboxymethyl)-2-heptyl-4,5-dihydro-1-(2-hydroxyethyl)-, inner salt 68171-60-8 EINECS 269-032-2