发明人冯建国,何建平,刘建华. "一种奥贝胆酸杂质33的合成方法" [P]. 中国发明专利, 专利号 CN 114259429 A, 授权公告日 2020-04-07.
发明人刘建华,朱建伟,周伟. "Method for the Synthesis of Obeticholic Acid Impurity 33" [P]. 中国发明专利, 专利号 CN 108024608 A, 授权公告日 2021-02-19.
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