发明人何建平,杨光,孙丽萍. "一种比沙可啶EP杂质E的合成方法" [P]. 中国发明专利, 专利号 CN 117072885 A, 授权公告日 2016-10-03.
发明人郑宇鹏,钱学锋,陈志强. "Method for the Synthesis of Bisacodyl EP Impurity E" [P]. 中国发明专利, 专利号 CN 111992555 B, 授权公告日 2019-03-05.
发明人赵玉洁,陈志强,胡光. "A Process for Preparing High-Purity Bisacodyl EP Impurity E" [P]. 中国发明专利, 专利号 CN 115696784 A, 授权公告日 2022-10-15.
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