Diethyl 1-propene-1,3-dicarboxylate, 1,5-diethyl 2-pentenedioate, 2-Pentenedioic acid, diethyl ester, glutaconic diethyl ester, Diethyl glutaconate,mixture of cis and trans, GLUTACONIC ACID DIETHYL ESTER, Glutaconic acid diethyl, 2-pentenedioicacid,diethylester, Diethyl (2E)-2-pentenedioate, diethylglutaconate, diethyl glutaconate,mixture of cis and tra, diethyl pent-2-enedioate