1,2-Bis(methoxycarbonyl)acetylene 1,2-Bis(methoxycarbonyl)ethyne 2-Butynedioic acid, dimethyl ester 4-02-00-02291 (Beilstein Handbook Reference) 762-42-5 Acetylenedicarboxylic acid dimethyl ester Acetylenedicarboxylic acid, dimethyl ester Acetylenedicarboxylic acid, dimethyl ester (8CI) BRN 0607063 Bis(methoxycarbonyl)acetylene DIMETHYL ACETYLENE DICARBOXYLATE ESTER Di(carbomethoxy)acetylene Dimethyl 2-butynedioate Dimethyl acetylenedicarboxylic acid Dimethyl butynedioate Dimethyl ethynedicarboxylate EINECS 212-098-4 Methyl acetylenedicarboxylate NSC 14912