发明人罗永刚,韩伟,王建平. "Method for the Synthesis of Calcifediol EP Impurity D" [P]. 中国发明专利, 专利号 CN 111465079 B, 授权公告日 2019-03-02.
发明人李文辉,何建平,周伟. "A Process for Preparing High-Purity Calcifediol EP Impurity D" [P]. 中国发明专利, 专利号 CN 112133501 B, 授权公告日 2025-01-04.
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