2-Butenedioic acid, 2-methyl-, dimethyl ester (Z)- 2-Butenedioic acid, 2-methyl-, dimethyl ester, (Z)- 617-54-9 Citraconic acid, dimethyl ester Dimethyl citraconate Dimethyl methyl maleate Methylmaleic acid, dimethyl ester NSC43975 WLN: 1OVY1&U1VO1 cis-2-Methyl-2-butenedioic acid, dimethyl ester