Chemistry is traditionally divided into organic and inorganic chemistry. Recommanded Product: 4,5-Dichloro-3(2H)-pyridazinone, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 932-22-9
Pyridazines with Heteroatom Substituents in Position 3 and 5, Part 1: 5-Hydroxy-3(2H)-pyridazinone and Its Derivatives
The synthesis of the title compound 7 was achieved starting with mucochloric acid via the pyridazinones 1,2 and 6.The electrolytic ionisation constants for 7 were found to be 4.81 (+/-0.03) and -0.3 (+/-0.3).Crystal structure analyses were performed for 7 and its “fixed” derivatives 6 and 9. – Keywords.Synthesis of 5-methoxy- and 5-hydroxy-3(2H)-pyridazinones; pKa Values of 5-hydroxy-3(2H)-pyridazinone; Crystal structure of 3(2H)-pyridazinones.
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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N2372 – PubChem