2-Butenedioic acid (Z)-, dimethyl ester 2-Butenedioic acid, dimethyl ester, (Z)- 624-48-6 Dimethyl cis-butenedioate Dimethyl cis-ethylenedicarboxylate Dimethyl maleate Maleic acid, dimethyl ester Methyl maleate NSC5161 Sipomer DMM WLN: 1OV1U1VO1 -C