发明人李文辉,高志强,林芳. "Method for the Synthesis of 2-(Difluoromethyl)-3-methyl-4-nitropyridine-5-carbonyl chloride" [P]. 中国发明专利, 专利号 CN 111239175 A, 授权公告日 2016-05-15.
发明人徐明华,钱学锋,李文辉. "A Process for Preparing High-Purity 2-(Difluoromethyl)-3-methyl-4-nitropyridine-5-carbonyl chloride" [P]. 中国发明专利, 专利号 CN 111054700 B, 授权公告日 2017-10-03.
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