发明人陈志强,林芳,张德明. "Method for the Synthesis of 1-(2,4-Difluorophenyl)-5-oxopyrrolidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110968499 B, 授权公告日 2017-01-16.
发明人徐明华,钱学锋,周伟. "A Process for Preparing High-Purity 1-(2,4-Difluorophenyl)-5-oxopyrrolidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108113759 A, 授权公告日 2023-04-19.
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