发明人何建平,杨光,钱学锋. "Method for the Synthesis of 2-Chloro-5-(chloromethyl)-6-(difluoromethyl)nicotinic acid" [P]. 中国发明专利, 专利号 CN 115132915 A, 授权公告日 2020-05-28.
发明人何建平,沈红梅,林芳. "A Process for Preparing High-Purity 2-Chloro-5-(chloromethyl)-6-(difluoromethyl)nicotinic acid" [P]. 中国发明专利, 专利号 CN 109331091 B, 授权公告日 2019-02-04.
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