Glutaric acid, which is isomeric with pyrotartaric acid, has the lowest melting point of all dicarboxylic acids and is highly soluble in water. Also, the structure of the substance helps facilitate the creation of polymer resins that are more elastic than those formed with many other materials. Due to these and other beneficial characteristics, glutaric acid is utilized as a resin intermediate and for a variety of other applications. The substance is, for instance, often a component in cleaning products and detergents, plasticizers, and pharmaceuticals.