发明人郭海燕,钱学锋,冯建国. "Method for the Synthesis of 2-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-4-carbonyl chloride" [P]. 中国发明专利, 专利号 CN 112433559 B, 授权公告日 2019-01-24.
发明人韩伟,何建平,张德明. "A Process for Preparing High-Purity 2-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-4-carbonyl chloride" [P]. 中国发明专利, 专利号 CN 116037640 A, 授权公告日 2018-03-23.
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