O,O-diethyl O-[3-methyl-4-(methylthio)phenyl] thiophosphate, ENT 25,636, O,O-diethyl O-[3-methyl-4-(methylsulfanyl)phenyl] phosphorothioate, Lucijet, OM-1455, Ethyl fenthion, O,O-diethyl O-4-methylthio-m-tolyl phosphorothioate, Fenthion ethyl, diethoxy-(3-methyl-4-methylsulfanylphenoxy)-sulfanylidene-λ<sup>5</sup>-phosphane, O,O-diethyl O-[3-methyl-4-(methylthio)phenyl] phosphorothioate, Bayer S 1751, EINECS 216-999-3