Fumaraldehydic acid, ethyl ester(6CI,7CI,8CI); (2E)-4-Oxobut-2-enoic acid ethyl ester; (E)-4-Oxo-2-butenoicacid ethyl ester; (E)-Ethyl 4-oxo-2-butenoate; Ethyl (2E)-4-oxobut-2-enoate;Ethyl (E)-3-formylacrylate; Ethyl fumaraldehydate; Ethyltrans-4-oxo-2-butenoate; Ethyl trans-4-oxo-2-butenoate; Ethyltrans-4-oxobutenoate
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