2-Butenedioic acid, 2-methyl-, (2E)- 2-Butenedioic acid, 2-methyl-, (E)- (9CI) 2-Methylfumaric acid 4-02-00-02231 (Beilstein Handbook Reference) 498-24-8 BRN 1722680 Butenedioic acid, methyl-, (E)- EINECS 207-859-2 Fumaric acid, methyl- Kyselina mesakonova [Czech] MESACONIC ACID Mesaconate Methylfumaric acid NSC 65438 trans-1-Propene-1,2-dicarboxylic acid trans-2-Methyl-2-butenedioic acid