发明人韩伟,陈志强,朱建伟. "Method for the Synthesis of 5-Cyano-6-(difluoromethyl)-3,4-dimethylpicolinic acid" [P]. 中国发明专利, 专利号 CN 114828139 B, 授权公告日 2021-06-28.
发明人赵玉洁,高志强,马晓峰. "A Process for Preparing High-Purity 5-Cyano-6-(difluoromethyl)-3,4-dimethylpicolinic acid" [P]. 中国发明专利, 专利号 CN 115431179 A, 授权公告日 2015-03-01.
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