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发明人马晓峰,李文辉,孙丽萍. "A Process for Preparing High-Purity 2-Amino-1-(4-ethoxyphenyl)-4,5-dimethyl-1H-pyrrole-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 117253795 A, 授权公告日 2024-04-04.
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