Similar names: Phosphonothioic acid, phenyl-, O-ethyl O-(4-nitrophenyl) ester (9CI); Phosphonothioic acid, phenyl-, O-ethyl O-(p-nitrophenyl) ester (8CI); Phosphonothioic acid, phenyl-, ethyl p-nitrophenyl ester (7CI); EPN; EPN 300; NSC 404840; NSC 8943; O-ETHYL O-(P-NITROPHENYL) PHENYLPHOSPHONOTHIOATE; O-Ethyl O-(4-nitrophenyl) benzenethionophosphonate; O-Ethyl O-(4-nitrophenyl) phenylphosphonothioate; O-Ethyl O-(p-nitrophenyl) phenylphosphonothioate; O-Ethyl O-p-nitrophenyl benzenethiophosphonate; Santox