2-Pentenedioic acid, diethyl ester;2-pentenedioicacid,diethylester ;Diethyl (2E)-2-pentenedioate;diethyl glutaconate, mixture of cis and tra;Diethyl glutaconate,mixture of cis and trans;diethyl pent-2-enedioate ;DIETHYL GLUTACONATE, 98%, MIXTURE OF CIS AND TRANS;GLUTACONIC ACID DIETHYL ESTER