6-butyl-5-methyl[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one

N-(4-ethylphenyl)-N'-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)guanidine

N-(2,5-dimethoxyphenyl)-1,3,5-triazine-2,4-diamine

N-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)-N'-(4-phenoxyphenyl)guanidine

N-cyclohexyl-N'-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)guanidine

N-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)indoline-1-carboximidamide

2-anilino-5,6-dimethylpyrimidin-4(3H)-one

5-ethyl-2-[(4-ethylphenyl)amino]-6-methylpyrimidin-4(3H)-one

methyl 6-oxohexahydropyridazine-4-carboxylate

(4-oxo-1,4-dihydropyrimido[1,2-a]benzimidazol-2-yl)acetic acid

methyl (5-oxo-4,5,6,7-tetrahydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)acetate