Notes: Hexahydrohippuric acid is a derivative of the amino acid glycine.{67075} It has been found in mammalian urine and is formed by gut microbiota from shikimic acid (Item No. 26851) derived from plants in the diet followed by conjugation to glycine.{67075} Hexahydrohippuric acid is also a metabolite of cyclohexanecarboxylate, which is also a product of shikimate metabolism.{67076}