5-bromo-1,3-dimethyl-6-(1'-methylbenzylidenehydrazino)uracil

6-(benzylidene-1'-methylhydrazino)-1,3-dimethyluracil

6-[N-[(E)-benzylideneamino]-N-methylamino]-3-methyl-1H-pyrimidine-2,4-dione

1-isopropyl-6-methyl-3-phenylpyrimido[5,4-e][1,2,4]triazine-5,7(1H,6H)-dione

1-Butyl-6-methyl-3-phenyl-1H-pyrimido[5,4-e][1,2,4]triazine-5,7-dione