发明人胡光,徐明华,杨光. "Method for the Synthesis of 4-(2-Chloro-4,5-difluorophenyl)-4-oxobutyric acid" [P]. 中国发明专利, 专利号 CN 109717996 B, 授权公告日 2020-10-23.
发明人郭海燕,陈志强,马晓峰. "A Process for Preparing High-Purity 4-(2-Chloro-4,5-difluorophenyl)-4-oxobutyric acid" [P]. 中国发明专利, 专利号 CN 108656560 A, 授权公告日 2017-01-07.
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