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发明人郭海燕,郑宇鹏,韩伟. "A Process for Preparing High-Purity 3-Methoxy-4-[[4-(trifluoromethyl)phenyl]amino]cyclobut-3-ene-1,2-dione" [P]. 中国发明专利, 专利号 CN 113003436 B, 授权公告日 2021-04-26.
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