Ammonium orotate is a chemical compound with the chemical formula .This is an organic ammonium salt of orotic acid (vitamin ).

Properties The compound is a white, crystalline powder, soluble in water, used in biochemical research and historically considered as a potential nutritional supplement, though its clinical significance is primarily diagnostic. As a metabolite, orotic acid (the anion of which is orotate) is an intermediate in the pyrimidine biosynthesis pathway.

Structure It exists as a 3D hydrogen-bonded supramolecular structure, often synthesized as ammonium orotate monohydrate.

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