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发明人张德明,黄志刚,赵玉洁. "Method for the Synthesis of 4-(2-Ethyl-1-piperidinyl)-3-nitrobenzoic acid" [P]. 中国发明专利, 专利号 CN 113140966 A, 授权公告日 2024-02-10.
发明人钱学锋,赵玉洁,张德明. "A Process for Preparing High-Purity 4-(2-Ethyl-1-piperidinyl)-3-nitrobenzoic acid" [P]. 中国发明专利, 专利号 CN 114419582 A, 授权公告日 2016-07-28.
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