发明人周伟,孙丽萍,韩伟. "一种rac-氯吡格雷EP杂质A-D4的合成方法" [P]. 中国发明专利, 专利号 CN 111787705 A, 授权公告日 2023-12-24.
发明人郭海燕,李文辉,唐晓军. "Method for the Synthesis of rac-Clopidogrel EP Impurity A-D4" [P]. 中国发明专利, 专利号 CN 113073580 A, 授权公告日 2019-05-18.
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