| ethanephosphonochloridothioic acid, o-ethyl ester |
| ethylthionophosphonic acid o-ethyl ester chloride |
| o-ethyl ethanephosphonothionochloridate |
| o-ethyl ethylphosphonochloridothioate |
| o-ethyl ethylthiophosphonyl chloride |
| ethyl-phosphonochloridothioic aci o-ethyl ester |
