An organic thiophosphate resulting from the <em>N</em>-deacylation of the proinsecticide acephate. ChEBI: Methamidophos is an organic thiophosphate resulting from the N-deacylation of the proinsecticide acephate. It has a role as an acaricide, an agrochemical and an avicide. It is a phosphoramide, an organothiophosphate insecticide and an organic thiophosphate.