19594-33-3 4-03-00-01122 (Beilstein Handbook Reference) BRN 1804778 Malonate malathion O,O-Diethyl (S-1-(1,1-dicarbethoxy)methyl) phosphorodithioate Phosphorodithioic acid, O,O-diethyl (S-(dicarbethoxy)methyl) ester