发明人郭海燕,孙丽萍,胡光. "Method for the Synthesis of Ethyl 4-bromo-2-cyano-3-(difluoromethyl)benzoate" [P]. 中国发明专利, 专利号 CN 113587545 A, 授权公告日 2025-03-11.
发明人冯建国,韩伟,郭海燕. "A Process for Preparing High-Purity Ethyl 4-bromo-2-cyano-3-(difluoromethyl)benzoate" [P]. 中国发明专利, 专利号 CN 112156471 A, 授权公告日 2017-07-19.
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