Oxaloacetic acid (also oxalacetic acid) is an organic compound with the chemical formula C4H4O5 or HOOC-(C=O)-(CH2)-COOH. It also has other names (see the table).
Its fully deprotonated derivative is the oxaloacetate anion, C4H2O52− or 2−; this name is also used for esters that contain the divalent moiety. Loss of a single proton gives the acid's conjugate base, the anion hydrogenoxaloacetate anion H(C=O)2(CH2)(C=O)−.
Read more about Oxaloacetic Acid: Function, Chemical Properties, Interactive Pathway Map