Similar names: Phosphorothioic acid, O,O-diethyl O-2-pyrazinyl ester; Ethyl pyrazinyl phosphorothioate (6CI); Phosphorothioic acid, O,O-diethyl O-pyrazinyl ester (8CI,9CI); AC 18133; ACC 18133; American Cyanamid 18133; CL 18133; Cynem; Cynophos; EN 18133; ENT 25,580; Experimental nematocide 18,133; Nemafos; Nemafos 10 G; Nemaphos; Nematocide GR; O,O-Diethyl O-2-pyrazinyl phosphorothioate; Thionazin; Thionazine; Zinophos; Zynophos