SEARCH Articles Figures Tables Pyrazino pyridazine-5,8-dione Pyridazine-3,6-dione, 1,2-dihydro Pyridazine-3,6-dione, alkylation Pyridazine-3,6-diones pyridazines, hexahydro Pyrido pyridazine-5,8-diones Pyrimido pyridazin-5,7-diones Pyrimido pyridazine-2,5-diones Pyrimido pyridazine-5,7 -dione Pyrimido[4,5-c pyridazine-5,7 -diones Pyrrolo pyridazine-5,7-dione