38090-82-3 BRN 1005692 O,O-Diethyl S-((5-methoxy-1,3,4-thiadiazol-2-yl)methyl) phosphorodithioate Phosphorodithioic acid, O,O-diethyl S-((5-methoxy-1,3,4-thiadiazol-2-yl)methyl) ester