Parabanic acid120-89-8100 % similar Alloxan50-71-569 % similar 2,4,5,6(1H,3H)-Pyrimidinetetrone, hydrate (1:1)2244-11-358 % similar Violuric acid87-39-852 % similar 5-Hydroxyuracil496-76-445 % similar Barbituric acid67-52-742 % similar Murexide3051-09-039 % similar 5-Amino-2,4,6(1H,3H,5H)-pyrimidinetrione118-78-536 % similar Alloxan monohydrate3237-50-136 % similar 5,5-Dibromo-2,4,6(1H,3H,5H)-pyrimidinetrione511-67-136 % similar Alloxantin76-24-436 % similar 2-Imidazolidinone120-93-433 % similar Piperazine-2,3-dione13092-86-933 % similar 4,5,6,7-Tetrahydro-1H-isoindole-1,3(2H)-dione4720-86-933 % similar Glycoluril496-46-833 % similar Carbohydrazide497-18-733 % similar N1,N2-Dimethylethanediamide615-35-033 % similar Dimethylurea96-31-133 % similar Oxalyldihydrazide996-98-533 % similar Alloxantin dihydrate6011-27-432 % similar