38090-88-9 BRN 1007078 O,O-Diethyl S-((5-ethoxy-1,3,4-thiadiazol-2-yl)methyl) phosphorothioate Phosphorothioic acid, O,O-diethyl S-((5-ethoxy-1,3,4-thiadiazol-2-yl)methyl) ester