发明人孙丽萍,沈红梅,何建平. "一种胆酸杂质49的合成方法" [P]. 中国发明专利, 专利号 CN 112064621 A, 授权公告日 2025-09-10.
发明人刘建华,胡光,周伟. "Method for the Synthesis of Cholic Acid Impurity 49" [P]. 中国发明专利, 专利号 CN 111484991 A, 授权公告日 2020-05-04.
发明人郑宇鹏,郭海燕,徐明华. "A Process for Preparing High-Purity Cholic Acid Impurity 49" [P]. 中国发明专利, 专利号 CN 108236708 B, 授权公告日 2021-06-24.
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