Also available in 5 mg, 10 mg, 25 mg, 100 mg, 200 mg, 500 mg and bulk. Please contact Fisher for quotes. D-alpha-Hydroxyglutaric acid disodium [Disodium (R)-2-Hydroxyglutarate] is a competitive inhibitor of alpha-ketoglutarate-dependent dioxygenases with a Ki of 0.628 mM. Purity 98%