title: [Studies on the syntheses of N-heterocyclic compounds. XIX. Synthesis of 4-alkyl-5,8-disubstituted amino-2-phenyl-3,4-dihydro-pyrimido(4,5-d)pyridazine (author's transl)].
mesh_terms: D011724:Pyridazines / Q000138:chemical synthesis*; D011743:Pyrimidines
chemical_list: D011724:Pyridazines; D011743:Pyrimidines