5-(4-((1-(2-(diethylamino)ethyl)-5-nitro-1H-benzo[d]imidazol-2-yl)methyl)phenoxy)pentanoic acid
5-(4-((1-(2-(diethylamino)ethyl)-5-nitro-1h-benzo[d]imidazol-2-yl)methyl)phenoxy)pentanoic acid
A member of the class of benzimidazoles that is 1<em>H</em>-benzimidazole substituted by 2-(diethylamino)ethyl, [4-(4-carboxybutoxy)phenyl]methyl, and nitro groups at positions 1, 2, and 5, respectively. It is a hapten used for the preparation of a vaccine against against isotonitazene and etonitazene opioids.