发明人刘建华,孙丽萍,徐明华. "Method for the Synthesis of Nifedipine EP Impurity C (E-Isomer)" [P]. 中国发明专利, 专利号 CN 111960683 A, 授权公告日 2023-10-23.
发明人罗永刚,赵玉洁,胡光. "A Process for Preparing High-Purity Nifedipine EP Impurity C (E-Isomer)" [P]. 中国发明专利, 专利号 CN 112811404 B, 授权公告日 2019-02-28.
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