7-Deazaxanthine39929-79-8100 % similar 7-Deazahypoxanthine3680-71-552 % similar Xanthine69-89-648 % similar 3H-1,2,3-Triazolo[4,5-D]pyrimidine-5,7(4H,6H)-dione1468-26-441 % similar Uric acid69-93-241 % similar 6,7-Dimethoxy-2,4(1H,3H)-quinazolinedione28888-44-036 % similar Lumazine487-21-834 % similar 6-Fluoro-1H-pyrrolo[2,3-B]pyridine898746-42-434 % similar 6-Thioxanthine2002-59-734 % similar 5-Hydroxy-2,4(1H,3H)-pyrimidinedione20636-41-333 % similar 6(5H)-Phenanthridinone1015-89-032 % similar 5,6-Dimethyluracil26305-13-532 % similar 5,6-Diaminouracil3240-72-032 % similar 5-Fluoro-4-iodo-1H-pyrrolo[2,3-B]pyridine1015610-23-732 % similar 5-Chlorouracil1820-81-131 % similar 1H-Indol-4-ol2380-94-131 % similar 5-Bromouracil51-20-731 % similar 5-Fluorouracil51-21-831 % similar Thymine65-71-431 % similar 5-Iodouracil696-07-131 % similar