Chemistry is traditionally divided into organic and inorganic chemistry. SDS of cas: 932-22-9, 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
Abstract: A series of novel monocyclic cis-beta-lactams were prepared from phenoxyacetic acid as ketene source and imines derived from 1-chloro-3,4-dihydronaphthalene-2-carbaldehyde and respective amine using ethyl 4,5-dichloro-6-oxopyridazine-1(6H)-carboxylate (or 2-ethoxy carbonyl DCPN) as a carboxylic acid activator.This is the first time 2-ethoxy carbonyl DCPN has been used as an acid activator in synthesis of beta-lactams. The reaction was entirely diastereoselective leading to the formation cis-beta-lactam derivatives.These newly synthesized cis-beta-lactam were fully characterized by FT-IR, 1H NMR, 13C NMR, HRMS, CHNS and X-ray crystallography study. All this novel compound was also evaluated for their antibacterial and antifungal activities against certain strains of Gram-positive bacteria, Gram-negative bacteria and fungi. These compounds displayed moderate activity against using bacterial and fungal strains. Graphic abstract: [Figure not available: see fulltext.].
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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N2343 – PubChem