发明人杨光,林芳,孙丽萍. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109332115 A, 授权公告日 2021-11-25.
发明人郑宇鹏,李文辉,高志强. "Method for the Synthesis of 2-(Difluoromethyl)-6-fluoro-3-(trifluoromethyl)pyridine-5-acetic acid" [P]. 中国发明专利, 专利号 CN 114077851 A, 授权公告日 2019-03-04.
发明人郭海燕,钱学锋,徐明华. "A Process for Preparing High-Purity 2-(Difluoromethyl)-6-fluoro-3-(trifluoromethyl)pyridine-5-acetic acid" [P]. 中国发明专利, 专利号 CN 109540716 A, 授权公告日 2016-04-10.
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