Chemistry is traditionally divided into organic and inorganic chemistry. COA of Formula: C5H7ClN4, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 17645-17-9
A process is described for the production of cyclohexanedimethanol by hydrogenation of a dialkyl cyclohexanedicarboxylate which comprises the steps of: (a) providing a hydrogenation zone containing a charge of a granular reduced manganese promoted copper catalyst; (b) forming a vaporous feed stream of a hydrogenatable material comprising a dialkyl cyclohexanedicarboxylate and from about 0.1 wt % up to about 15 wt % of an acidic material at a feed temperature which is in the range of from about 150 C. to about 350 C. and which is above the dew point of the feed stream and at a feed pressure which is in the range of from about 150 psia (about 10.34 bar) up to about 2000 psia (about 137.90 bar), said vaporous mixture having a known hydrogen-containing gas:dialkyl cyclohexanedicarboxylate ratio; (c) supplying the vaporous feed stream to the hydrogenation zone; (d) maintaining hydrogenation conditions in the hydrogenation zone which are effective to maintain the reaction mixture in contact with the catalyst above its dew point; (e) passing the vaporous feed stream through the hydrogenation zone: and (f) recovering from the hydrogenation zone a product stream comprising cyclohexanedimethanol.
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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N2083 – PubChem