2-Butenedioic acid (2E)-, diethyl ester 2-Butenedioic acid (E)-, diethyl ester 2-Butenedioic acid (E)-, diethyl ester (9CI) 2-Butenedioic acid, diethyl ester, (E)- 4-02-00-02207 (Beilstein Handbook Reference) 623-91-6 AI3-05613 Anti-Psoriaticum BRN 0775347 DIETHYL MALEATE Diethyl fumarate Diethylester kyseliny fumarove [Czech] EINECS 210-819-7 Fumaric acid, diethyl ester Fumaric acid, diethyl ester (8CI) HSDB 5722 NSC 20954 trans-2-Butenedioic acid diethyl ester