发明人罗永刚,李文辉,赵玉洁. "Method for the Synthesis of 4-Chloro-2-ethyl-5-((4-methoxybenzyl)oxy)pyridazin-3(2H)-one" [P]. 中国发明专利, 专利号 CN 110350649 B, 授权公告日 2018-10-01.
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