发明人郭海燕,胡光,李文辉. "Method for the Synthesis of Ticagrelor impurity 28" [P]. 中国发明专利, 专利号 CN 110089757 B, 授权公告日 2023-02-03.
发明人周伟,徐明华,张德明. "A Process for Preparing High-Purity Ticagrelor impurity 28" [P]. 中国发明专利, 专利号 CN 117692649 A, 授权公告日 2019-07-08.
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