4,6-Dihydroxypyrimidine1193-24-431 % similar Methylthiouracil56-04-230 % similar Triacetic acid lactone675-10-530 % similar 6-Amino-2-methyl-4(3H)-pyrimidinone767-16-830 % similar 2,6-Dihydroxy-3,4-dimethylpyridine84540-47-630 % similar 6-Methylpyridazin-3(2H)-one13327-27-030 % similar 5-Amino-3-methylisoxazole14678-02-530 % similar 4,6-Dihydroxy-2-(methylthio)pyrimidine1979-98-230 % similar