发明人徐明华,高志强,马晓峰. "Method for the Synthesis of 2-(4-(Difluoromethyl)-6-hydroxy-5-nitropyridin-2-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 109350586 A, 授权公告日 2019-04-21.
发明人胡光,郭海燕,郑宇鹏. "A Process for Preparing High-Purity 2-(4-(Difluoromethyl)-6-hydroxy-5-nitropyridin-2-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 116917806 A, 授权公告日 2019-09-20.
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