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发明人郭海燕,郑宇鹏,钱学锋. "Method for the Synthesis of 2-Bromo-4-(difluoromethyl)-5-nitronicotinic acid" [P]. 中国发明专利, 专利号 CN 109237118 B, 授权公告日 2016-08-09.
发明人王建平,赵玉洁,马晓峰. "A Process for Preparing High-Purity 2-Bromo-4-(difluoromethyl)-5-nitronicotinic acid" [P]. 中国发明专利, 专利号 CN 116305136 A, 授权公告日 2022-01-17.
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