发明人郭海燕,徐明华,冯建国. "Method for the Synthesis of 4-Cyano-5-(difluoromethyl)-2-hydroxy-3-nitropyridine" [P]. 中国发明专利, 专利号 CN 108531194 A, 授权公告日 2025-09-20.
发明人黄志刚,林芳,唐晓军. "A Process for Preparing High-Purity 4-Cyano-5-(difluoromethyl)-2-hydroxy-3-nitropyridine" [P]. 中国发明专利, 专利号 CN 114998822 A, 授权公告日 2021-03-20.
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