6-methoxy-1-[(4-methoxy-3-nitrophenyl)methyl]-3-methylpyrimidine-2,4-dione

9-(benzylideneamino)-1-methyl-3H-purine-2,6-dione

N-[5-[[5-(butylcarbamoyl)-1-methylpyrrol-3-yl]carbamoyl]-1-methylpyrrol-3-yl]-1-methyl-4-[[2-(3-methyl-6-nitro-2,4-dioxopyrimido[4,5-b]quinolin-10-yl)acetyl]amino]pyrrole-2-carboxamide

3-methyl-6-phenoxy-1H-pyrimidine-2,4-dione

3-methylchromeno[2,3-d]pyrimidine-2,4-dione