2,4-pentadienoic acid methyl ester, methyl penta-2,4-dienoate, 1-methoxycarbonyl-1,3-butadiene, penta-2,4-dienoic acid methyl ester, Vynilacrylic acid methyl ester, methyl pentadienate, Dimethyl-2,4-pentandioate, Penta-2,4-diensaeure-methylester, methyl 1,3-butadiene-1-carboxylate mixt. of cis/trans, METHYL 1,3-BUTADIENE-1-CARBOXYLATE, METHYL 2,4-PENTADIENOATE, 1-methoxycarbonylbuta-1,3-diene, METHYL 1,3-BUTADIENE-1-CARBOXYLATE MIXT. OF CIS/TRANS,STAB.