Affixes

Imido‑ is the combining form relating to imide, an organic compound containing the group —CONHCO—. Similarly imino‑ indicates the presence of an imine group —C==NH or —C==NR, where R is an alkyl or other group. However, the two are sometimes confused, especially with iminoester, a compound containing the group —C(NH)OR, which should strictly be an imidoester. Imido‑ is also applied unsystematically to heterocyclic nitrogen compounds such as imidazole, an anti-fungal drug, which has a five-membered ring with two nitrogen atoms in it, or imidocarb, used to treat tick-borne diseases in domestic animals.