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发明人赵玉洁,朱建伟,钱学锋. "A Process for Preparing High-Purity 1-Ethyl-3-(4-methoxyphenyl)-1H-pyrazole-5-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 108696467 B, 授权公告日 2016-01-25.
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