3348-67-2 8011 HC BRN 2116851 Ethyl methyl thiopyrophosphate ((Eto)2P(O)OP(O)(OMe)(SMe)) (7CI) Thiodiphosphoric acid ((HO)2P(O)OP(O)(OH)(SH)), O,O-diethyl O',S'-dimethyl ester (9CI) Thiopyrophosphoric acid, O,O-diethyl O',S'-dimethyl ester