Diazinon is a member of the class of pyrimidines that is pyrimidine carrying an isopropyl group at position 2, a methyl group at position 6 and a (diethoxyphosphorothioyl)oxy group at position 4. It has a role as an agrochemical, an acaricide, an EC 3.1.1.8 (cholinesterase) inhibitor, a nematicide, an EC 3.1.1.7 (acetylcholinesterase) inhibitor, a xenobiotic and an environmental contaminant. It is an organic thiophosphate and a member of pyrimidines. It is functionally related to a 2-isopropyl-6-methylpyrimidin-4-ol.