I-CAS:110-16-7 I-Molecular Formula:I-C4H4O4 Isisindo se-Molecular:116.07 I-EINECS:203-742-5 Omqondofana:(z)-butenedioicaci; 1,2-Ethylenedicarboxylic acid, (Z); 1,2-ethylenedicarboxylicacid,(z); 2-Butenedioicacid(Z)-; i-acidemaleique; I-Butenedioic acid,(Z)-; cis-Ethylene-1,2-dicar-boxylicacid; Kyselina maleinova