759-65-9 AI3-05834 Butanedioic acid, methyloxo-, diethyl ester Diethyl 2-methyl-3-oxosuccinate Diethyl 2-methyloxosuccinate Diethyl 3-methyl-2-oxosuccinate Diethyl methyloxobutanedioate EINECS 212-071-7 Ethyl alpha-ethoxalylpropionate NSC 33946 Oxalacetic acid, methyl-, diethyl ester (8CI) Propanoic acid, 2-(ethoxyoxoacetyl)-, ethyl ester