Main Page | See live article | Alphabetical index Ketoglutaric acid is used for either of two crystalline keto derivatives C5H6O5 of glutaric acid. As alpha-Ketoglutaric acid (2-Oxo-1,5-pentanedioic acid) a Krebs cycle intermediate. Sold in dietary supplements and to body builders as AKG. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.