(E)-4-ethoxy-4-oxobut-2-enoic acid;4-ethoxy-4-oxobut-2-enoic acid;(E)-4-ethoxy-4-oxo-but-2-enoic acid;4-ethoxy-4-oxo-but-2-enoic acid;(E)-4-ethoxy-4-keto-but-2-enoic acid;4-ethoxy-4-keto-but-2-enoic acid;(2E)-4-Ethoxy-4-oxo-2-butenoic acid;2-Butenedioic acid (E)-, monoethyl ester (9CI);EINECS 219-544-7;Ethyl hydrogen fumarate;Fumaric acid, ethyl ester;Fumaric acid, monoethyl ester;NSC244252;Monoethyl trans-2-butenedioate;NSC 524101;Monoethyl fumarate;128422_ALDRICH;Fumaric acid monoethyl ester;mono-Ethyl fumarate
(E)-4-ethoxy-4-oxobut-2-enoic acid;4-ethoxy-4-oxobut-2-enoic acid