2,4,5,6(1H,3H)-Pyrimidinetetrone 2,4,5,6-Pyrimidintetron [Czech] 2,4,5,6-Tetraoxohexahydropyrimidine 50-71-5 AI3-15282 ALLOXANE Alloxan Alloxan 7169 Barbituric acid, 5-oxo- EINECS 200-062-0 Mesoxalylcarbamide Mesoxalylurea NSC 7169 Urea, mesoxalyl-