Urazole3232-84-6100 % similar Cyanuric acid108-80-567 % similar Melamine cyanurate37640-57-640 % similar 1,3-Dihydro-2H-imidazol-2-one5918-93-435 % similar 2-Benzimidazolinone615-16-735 % similar Uric acid69-93-232 % similar 1,3-Dihydro-4-methyl-2H-imidazol-2-one1192-34-330 % similar 5,6-Diaminobenzimidazolone55621-49-330 % similar Uracil66-22-830 % similar