2,6,7-Trioxa-1-phosphabicyclo[2.2.2]octane, 4-ethyl-, 1-sulfide 4-Ethyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane 1-sulfide 935-52-4 NSC53139 Phosphorothioic acid, cyclic O,O,O-ester with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol WLN: T66 A B AO EOPOTJ C2 FS