5,5'-methylenebis(1,3-dimethyluracil)

methyl 2-(1,2,3,4-tetrahydro-1,3-dimethyl-2,4-dioxo-5-pyrimidinyl)-1H-indole-3-propionate

5-(3,4-dimethoxyphenyl)-1,3-dimethyluracil

5-(2,3-dimethoxyphenyl)-1,3-dimethyluracil

1,3,6-trimethylpyrido[3,2-d]pyrimidine-2,4-dione