Synonyms: 4-(Carboxymethyl)-1,3-dimethylimidazoliumhydroxide, inner salt (7CI); 5-(Carboxymethyl)-1,3-dimethylimidazoliniumhydroxide, inner salt (6CI); Imidazolium, 4-(carboxymethyl)-1,3-dimethyl-,hydroxide, inner salt (8CI); Zooanemonin; Zooanemonine