| epn | <chemical> An organothiophosphorus cholinesterase inhibitor that is used as an insecticide and as a acaricide. Pharmacological action: cholinesterase inhibitor, insecticide, organothiophosphate. Chemical name: Phosphonothioic acid, phenyl-, O-ethyl O-(4-nitrophenyl) ester (12 Dec 1998) |
|---|