<unk>  is one of two ketone derivatives of glutaric acid. (The term<unk>  acid," when not further qualified, almost always refers to the<unk>  variant. Beta-ketoglutaric acid varies only by the position of the ketone functional group, and is much less common.)
Its anion,<unk> -ketoglutarate (also called oxo-glutarate) is an important biological compound.  It is the keto acid produced by de-amination of glutamate, and is an intermediate in the Krebs cycle.
Alpha-ketoglutaric acid
Aminohippuric acid
Aminohippurate
Pyruvic acid
Uridine triacetate
Malic acid
Inositol nicotinate
3-Methylglutaconyl CoA