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发明人韩伟,杨光,郑宇鹏. "A Process for Preparing High-Purity Ethyl 4-chloro-1-ethyl-5-methyl-1H-pyrazole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 114249386 A, 授权公告日 2018-01-02.
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