(2-Amidinothioethyl) ethylphosphate 2-(Formamidine-thio) ethyl ester of ethylphosphoric acid 39042-12-1 Phosphoric acid, O-(2-amidinothioethyl) O-ethyl ester Pseudourea, 2-(2-hydroxyethyl)-2-thio-, ethylphosphite (ester)