title: [Studies on the syntheses of N-heterocyclic compounds. IX. On the reduction of 2-aryl-5,8-disubstituted pyrimido(4,5-d)pyridazine].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D010084:Oxidation-Reduction; D011621:Pteridines; D011724:Pyridazines; D011743:Pyrimidines
chemical_list: D011621:Pteridines; D011724:Pyridazines; D011743:Pyrimidines