发明人何建平,钱学锋,张德明. "一种rel-(3R,4S)-3-乙基-4-肼基哌啶-1-羧酸甲酯的合成方法" [P]. 中国发明专利, 专利号 CN 109701520 A, 授权公告日 2019-02-10.
发明人胡光,高志强,陈志强. "Method for the Synthesis of rel-(3R,4S)-Methyl 3-ethyl-4-hydrazinylpiperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 111499399 A, 授权公告日 2023-02-11.
发明人徐明华,郑宇鹏,冯建国. "A Process for Preparing High-Purity rel-(3R,4S)-Methyl 3-ethyl-4-hydrazinylpiperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 110719758 B, 授权公告日 2019-07-22.
参考文献 Literature
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