发明人王建平,唐晓军,马晓峰. "Method for the Synthesis of Ethyl 7-chloro-6-(difluoromethoxy)-4-oxo-1,4-dihydroquinoline-3-carboxylate" [P]. 中国发明专利, 专利号 CN 109899020 B, 授权公告日 2015-03-04.
发明人李文辉,周伟,韩伟. "A Process for Preparing High-Purity Ethyl 7-chloro-6-(difluoromethoxy)-4-oxo-1,4-dihydroquinoline-3-carboxylate" [P]. 中国发明专利, 专利号 CN 112710571 A, 授权公告日 2023-08-11.
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