发明人张德明,罗永刚,沈红梅. "Method for the Synthesis of Cholecalciferol EP Impurity B" [P]. 中国发明专利, 专利号 CN 112790046 B, 授权公告日 2023-02-24.
Davis P L, Williams B T, Yamamoto T. "A Process for Preparing High-Purity Cholecalciferol EP Impurity B" [P]. US Patent, US 9898380 B2, 2019-03-04.
参考文献 Literature
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