Pyridazine289-80-5100 % similar Pyridine110-86-142 % similar Pyridinium hydrobromide18820-82-133 % similar Hydrofluoric acid pyridine complex32001-55-133 % similar Poly(pyridine fluoride)62778-11-433 % similar Pyridinium chloride628-13-733 % similar 3-Chloropyridazine1120-95-230 % similar 3-Methylpyridazine1632-76-430 % similar 3(2H)-Pyridazinone504-30-330 % similar