Alloxan50-71-5100 % similar 2,4,5,6(1H,3H)-Pyrimidinetetrone, hydrate (1:1)2244-11-383 % similar Parabanic acid120-89-869 % similar Violuric acid87-39-846 % similar 5-Hydroxyuracil496-76-440 % similar Barbituric acid67-52-736 % similar Murexide3051-09-035 % similar Cyclohexanehexone527-31-133 % similar 5-Amino-2,4,6(1H,3H,5H)-pyrimidinetrione118-78-532 % similar Alloxan monohydrate3237-50-132 % similar 5,5-Dibromo-2,4,6(1H,3H,5H)-pyrimidinetrione511-67-132 % similar Alloxantin76-24-432 % similar Bromanil488-48-230 % similar