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发明人张德明,李文辉,孙丽萍. "Method for the Synthesis of Methyl 2-(3-(4-bromophenyl)-6-oxopyridazin-1(6H)-yl)butanoate" [P]. 中国发明专利, 专利号 CN 114708007 B, 授权公告日 2022-11-06.
发明人韩伟,郑宇鹏,钱学锋. "A Process for Preparing High-Purity Methyl 2-(3-(4-bromophenyl)-6-oxopyridazin-1(6H)-yl)butanoate" [P]. 中国发明专利, 专利号 CN 111678901 A, 授权公告日 2023-10-27.
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