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发明人郭海燕,张德明,孙丽萍. "Method for the Synthesis of N-[(1E)-(4-Hydroxy-3-methoxyphenyl)methylidene]piperidine-3-carbohydrazide" [P]. 中国发明专利, 专利号 CN 117689925 B, 授权公告日 2018-02-24.
发明人徐明华,王建平,赵玉洁. "A Process for Preparing High-Purity N-[(1E)-(4-Hydroxy-3-methoxyphenyl)methylidene]piperidine-3-carbohydrazide" [P]. 中国发明专利, 专利号 CN 113448260 A, 授权公告日 2021-06-26.
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