5,6-Diaminouracil3240-72-033 % similar 5-Ethyl-2,4(1H,3H)-pyrimidinedione4212-49-133 % similar Trifluoromethyluracil54-20-633 % similar 5-Methoxyuracil6623-81-033 % similar Pyrimidone557-01-732 % similar 1,2,3,4-Tetrahydro-2,4-dioxo-5-pyrimidinecarboxylic acid23945-44-032 % similar Uracil66-22-831 % similar 5-Nitro-2,4(1H,3H)-pyrimidinedione611-08-531 % similar 5-Acetyl-2,4(1H,3H)-pyrimidinedione6214-65-931 % similar 6-Bromo-1,2,4-triazine-3,5(2H,4H)-dione4956-05-230 % similar 4-Thiouracil591-28-630 % similar 6-Azathymine932-53-630 % similar 6,7-Dimethoxy-2,4(1H,3H)-quinazolinedione28888-44-030 % similar