ethyl 3-acetoxy-2-butenoate, 3-Acetyloxy-2-butenoic acid ethyl ester, 3-Acetoxy-2-butensaeure-aethylester, ethyl 3-acetoxybut-2-enoate, Acetyl-enol-acetessigsaeure-aethylester, 3-acetoxy-crotonic acid ethyl ester, 3-Acetoxy-2-butenoic acid ethyl ester, 3-Acetoxy-crotonsaeure-aethylester
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