ChEBI: Acephate is a phosphoramide that is methamidophos in which one of the hydrogens is replaced by an acetyl group. It has a role as an acaricide, an EC 3.1.1.7 (acetylcholinesterase) inhibitor and an agrochemical. It is a mixed diacylamine, a phosphoramide, an organic thiophosphate and an organothiophosphate insecticide. It is functionally related to a member of methamidophos.