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发明人钱学锋,李文辉,陈志强. "A Process for Preparing High-Purity 4-Amino-1-ethyl-N-(2-hydroxyethyl)-1H-pyrazole-5-carboxamide" [P]. 中国发明专利, 专利号 CN 116812238 A, 授权公告日 2015-09-19.
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