Title: Divicine
CAS Registry Number: 32267-39-3
CAS Name: 2,6-Diamino-1,6-dihydro-4,5-pyrimidinedione
Additional Names: 2,6-diamino-4,5-pyrimidinediol; 2,6-diamine-5-hydroxy-4(3H)-pyrimidinone; 2,4-diamino-5,6-dihydroxypyrimidine
Molecular Formula: C4H6N4O2
Molecular Weight: 142.12
Percent Composition: C 33.80%, H 4.26%, N 39.42%, O 22.52%
Literature References: From vicine by heating with dil H2SO4: Ritthausen, Ber. 29, 2108 (1896); Levene, Senior, J. Biol. Chem. 25, 607 (1916). Structure: Bendich, Clements, Biochim. Biophys. Acta 12, 462 (1953). Synthesis: Davall, Laney, J. Chem. Soc. 1956, 2124; Chesterfield et al., ibid. 1964, 1001.
Properties: Brownish needles, dec above 280°. One gram dissolves in 100 ml boiling water, in about 350 ml cold water. Soluble in 10% KOH.
Derivative Type: Diacetate
Molecular Formula: C8H10N4O4
Molecular Weight: 226.19
Percent Composition: C 42.48%, H 4.46%, N 24.77%, O 28.29%
Properties: Crystals from water, dec 309-312°.
Dixanthogen Dixyrazine Djenkolic Acid D-Lactic Acid DL-Fructose

pyrimidine tautomer
pyrimidinone tautomer
CAS number 32267-39-3 [1]
PubChem 91606
ChemSpider 2971290 YesY
Jmol-3D images Image 1
Image 2
Molecular formula C4H6N4O2
Molar mass 142.12 g mol−1
Appearance Brownish needles
Solubility in water Soluble in 10% KOH
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Divicine (2,6-diamino-4,5-dihydroxypyrimidine) is an oxidant and a base with alkaloidal properties found in fava beans and Lathyrus sativus. It is an aglycone of vicine. A common derivative is the diacetate form (2,6-diamino-1,6-dihydro-4,5-pyrimidinedione).[2]