has role is conjugate acid of is conjugate base of oxalate oxalic acid oxalate(2-) dicarboxylic acid monoanion oxalate(1-) 88.987 89.02694 A dicarboxylic acid monoanion that is the conjugate base of oxalic acid. Beilstein:3601755 C2HO4 CHEBI:46904 Gmelin:49515 Hox InChI=1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)/p-1 MUBZPKHOEPUJKR-UHFFFAOYSA-M OC(=O)C([O-])=O carboxyformate chebi_ontology hydrogen ethanedioate hydrogen oxalate plant metabolite