13547-40-5 1497-68-3 EINECS 216-095-9 Ethanephosphonochloridothioic acid, O-ethyl ester Ethylthionophosphonic acid O-ethyl ester chloride HSDB 5833 O-ETHYL ETHYLTHIOPHOSPHONYL CHLORIDE O-Ethyl ethanephosphonochloridothioate O-Ethyl ethanephosphonothionochloridate O-Ethyl ethylchloridothiophosphonate O-Ethyl ethylphosphonochloridothioate Phosphonochloridothioic acid, ethyl-, O-ethyl ester