发明人王建平,何建平,杨光. "Method for the Synthesis of Ribociclib Impurity N1" [P]. 中国发明专利, 专利号 CN 113105000 B, 授权公告日 2021-05-07.
发明人郭海燕,韩伟,陈志强. "A Process for Preparing High-Purity Ribociclib Impurity N1" [P]. 中国发明专利, 专利号 CN 116968571 A, 授权公告日 2023-12-19.
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