| Label | Id | |
|---|---|---|
| 2,4,5,6(1H,3H)-Pyrimidinetetrone | 76451 | |
| 2,4,5,6-Tetraoxohexahydropyrimidine | 76451 | |
| 2,4,5,6-pyrimidinetetrone | 76451 | |
| 5,6-dioxouracil | 76451 | |
| Alloxane | 76451 | |
| Mesoxalylcarbamide | 76451 | |
| Mesoxalylurea | 76451 | |
| Pyrimidinetetrone | 76451 | |
| 5-oxobarbituric acid | 76451 | |
| NSC 7169 | 76451 |