[Studies on pyridazone derivatives. I. Synthesis of 2-phenyl- 6-hydroxy-4-dimethylamino-3(2H)-pyridazinone derivatives].
D000700:Analgesics; D002625:Chemistry, Organic; D055601:Organic Chemistry Phenomena; D011724:Pyridazines
D000700:Analgesics; D011724:Pyridazines