Itaconic acid 5G. Itaconic acid, An isocitrate lyase inhibitor, CAS: 97-65-4, Molecular Formula: C5H6O4, Molecular Weight: 130. 1, Purity: greater than or equal to 99% by titration, Appearance: White solid, Synonym: Methylenesuccinic acid 2-Propene-1, 2-dicarboxylic acid, Size: 5G