dicarboxylic acid dianion iminoaspartate 129.006 129.07090 2-iminobutanedioate 2-iminosuccinate C4H3NO4 CHEBI:58831 Dicarboxylate anion arising from deprotonation of both carboxylic acid groups of iminoaspartic acid. InChI=1S/C4H5NO4/c5-2(4(8)9)1-3(6)7/h5H,1H2,(H,6,7)(H,8,9)/p-2 NMUOATVLLQEYHI-UHFFFAOYSA-L [O-]C(=O)CC(=N)C([O-])=O chebi_ontology C4-dicarboxylate