Purine N-oxides. LXII. 2,4-dioxopyrido(2,3-d)pyrimidine N-oxides.
D003497:Cyclic N-Oxides / Q000138:chemical synthesis*; D008722:Methods; D011725:Pyridines / Q000138:chemical synthesis; D011743:Pyrimidines / Q000138:chemical synthesis
D003497:Cyclic N-Oxides; D011725:Pyridines; D011743:Pyrimidines