发明人赵玉洁,李文辉,郭海燕. "Method for the Synthesis of Apremilast impurity 8" [P]. 中国发明专利, 专利号 CN 115004180 A, 授权公告日 2018-01-07.
发明人郭海燕,徐明华,陈志强. "A Process for Preparing High-Purity Apremilast impurity 8" [P]. 中国发明专利, 专利号 CN 112873059 B, 授权公告日 2023-04-12.
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