Title: Oxonic Acid
CAS Registry Number: 937-13-3
CAS Name: 1,4,5,6-Tetrahydro-4,6-dioxo-1,3,5-triazine-2-carboxylic acid
Synonyms: allantoxanic acid; 5-azaorotic acid;
s-triazine-2,4-dione-6-carboxylic acid; 2,4-dioxo-1,2,3,4-tetrahydro-1,3,5-triazine-6-carboxylic acid
Molecular Formula: C4H3N3O4
Molecular Weight: 157.08
Percent Composition: C 30.58%, H 1.93%, N 26.75%, O 40.74%
Literature References: Formed during alkaline oxidation of uric acid with H2O2 or KMnO4. Prepn and structure: Brandenberger,
Helv. Chim. Acta 37, 641 (1954); Brandenberger, Brandenberger,
ibid. 37, 2207 (1954); Piskala, Gut,
Collect. Czech. Chem. Commun. 27, 1572 (1962). Metabolism: Chelbova
et al., Biochem. Pharmacol. 19, 2785 (1970); Cihak, Sorm,
ibid. 21, 607 (1972).
Properties: Free acid is very unstable; can be isolated as the monopotassium salt. uv max (pH 9): 255 nm (e 6800); (pH 12): 252 nm (e 4600).
Absorption maximum: uv max (pH 9): 255 nm (e 6800); (pH 12): 252 nm (e 4600)
Derivative Type: Oxonic acid amide
Molecular Formula: C4H4N4O3
Molecular Weight: 156.10
Percent Composition: C 30.78%, H 2.58%, N 35.89%, O 30.75%
Properties: Microcrystalline substance. Practically insol in organic solvents, sparingly sol in boiling water. Does not melt below 350°, darkens above 300°.
