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发明人赵玉洁,周伟,高志强. "Method for the Synthesis of Ethyl 2-methyl-3-oxo-2,3-dihydropyridazine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 115728348 A, 授权公告日 2017-06-06.
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