5,5-Dibromo-2,4,6(1H,3H,5H)-pyrimidinetrione511-67-1100 % similar Alloxantin76-24-456 % similar Barbituric acid67-52-737 % similar Phenobarbital50-06-637 % similar Amobarbital57-43-237 % similar (±)-Pentobarbital76-74-436 % similar 2,4,5,6(1H,3H)-Pyrimidinetetrone, hydrate (1:1)2244-11-333 % similar 1,5,5-Trimethyl-2,4-imidazolidinedione6851-81-633 % similar Violuric acid87-39-833 % similar Bis(trifluoroacetyl)imide407-24-932 % similar Dimethadione695-53-430 % similar