6-Hydroxy-7-methoxy-4(3H)-quinazolinone179688-52-931 % similar O-(6)-Methylguanine20535-83-531 % similar 5-Fluoro-2-methoxy-4(3H)-pyrimidinone1480-96-231 % similar 5-Methoxybenzimidazole4887-80-331 % similar Hypoxanthine68-94-031 % similar Tetrahydro-2-methyl-3-thioxo-1,2,4-triazine-5,6-dione58909-39-030 % similar 4-Chloro-5-methoxypyridazin-3(2H)-one63910-43-030 % similar 5,6-Dimethoxypyrimidin-4-amine5018-45-130 % similar