Synonyms: 1,4-Cyclohexadiene-1,4-dicarboxylicacid, 2,5-dihydroxy-, diethyl ester (6CI,8CI,9CI);1,4-Bis(ethoxycarbonyl)-2,5-dihydroxy-1,4-cyclohexadiene;2,5-Dihydroxy-1,4-cyclohexadiene-1,4-dicarboxylic acid diethyl ester; Diethyl2,5-dihydroxy-1,4-cyclohexadiene-1,4-dicarboxylate; Diethyl succinoylsuccinate;NSC 177976