Phenylphosphonothioic Acid, 2-Ethyl 2-(4-Nitrophenyl) Ester

**Definition:** An organothiophosphorus cholinesterase inhibitor that is used as an insecticide and as a acaricide.

**Tree numbers:** - D02.705.429.812.750 - D02.705.539.692.750 - D02.886.300.846.750

**Synonyms:** - O-Ethyl-O-(4-nitrophenyl)phenylphosphonothioate