3-[(2E)-3-(dimethylamino)prop-2-enoyl]-6-methyl-2H-pyran-2,4(3H)-dione

methyl 4-hydroxy-2-methylpyrimidine-5-carboxylate

N-(4,6-dimethylpyrimidin-2-yl)-N'-phenylguanidine

N-(3-chloro-4-fluorophenyl)-N'-(4,6-dimethylpyrimidin-2-yl)guanidine

N-(4,6-dimethylpyrimidin-2-yl)-4-(4-methoxyphenyl)piperazine-1-carboximidamide

N-(4,6-dimethylpyrimidin-2-yl)-N'-[2-(phenylthio)phenyl]guanidine

1-(4-methyl-3-nitrophenyl)-1H-pyrrole-2,5-dione

dimethyl 5-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)isophthalate

2-[2-(2,4-dihydroxyphenyl)-2-oxoethoxy]benzoic acid

(2Z)-2-(4-chlorobenzylidene)-6-hydroxy-1-benzofuran-3(2H)-one

(2Z)-6-hydroxy-2-(2-thienylmethylene)-1-benzofuran-3(2H)-one