Uracil66-22-8100 % similar 4-Thiouracil591-28-656 % similar 2-Thiouracil141-90-254 % similar 4-Methyl-2-pyrimidinol monohydrochloride5348-51-654 % similar 6-Hydrazinyl-2(1H)-pyrimidinone3310-41-650 % similar 2-(Methylthio)-4(3H)-pyrimidinone5751-20-250 % similar 2-Pyrimidinone hydrochloride38353-09-244 % similar Pyrimidone557-01-743 % similar 2,6-Dihydroxypyridine626-06-243 % similar 4-Hydroxypyrimidine4562-27-042 % similar 4(3H)-Pyrimidinone51953-17-442 % similar 1,2,4-Triazine-3,5(2H,4H)-dione461-89-241 % similar 4-Hydroxy-2(1H)-pyridinone626-03-941 % similar 2,6-Dihydroxypyridine hydrochloride10357-84-340 % similar 2-Pyridone142-08-538 % similar 2-Pyridinol72762-00-638 % similar 6-Chlorouracil4270-27-338 % similar 6-Aminouracil873-83-638 % similar 3(2H)-Pyridazinone504-30-337 % similar 4-[(4-Hydroxy-2-pyrimidinyl)amino]benzonitrile189956-45-437 % similar