Chemistry is traditionally divided into organic and inorganic chemistry. Quality Control of 3,6-Dichloropyridazine, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 141-30-0
Under suitable thermal or basic conditions pyridazinylhydrazones are transformed to the desmotropic pyridazinylpyrazolinones , the structure of which was proven by alkylation and acylation.
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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N1916 – PubChem