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发明人郭海燕,冯建国,郑宇鹏. "A Process for Preparing High-Purity 7-chlorothieno[3,2-b]pyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114290193 B, 授权公告日 2018-07-28.
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