发明人王建平,陈志强,刘建华. "一种阿哌沙班4,5-去氢羧酸杂质的合成方法" [P]. 中国发明专利, 专利号 CN 108646429 A, 授权公告日 2021-01-15.
发明人李文辉,胡光,郑宇鹏. "Method for the Synthesis of Apixaban 4,5-Dehydro Carboxylic Acid" [P]. 中国发明专利, 专利号 CN 116223997 A, 授权公告日 2015-10-21.
发明人胡光,马晓峰,杨光. "A Process for Preparing High-Purity Apixaban 4,5-Dehydro Carboxylic Acid" [P]. 中国发明专利, 专利号 CN 111079010 A, 授权公告日 2019-07-22.
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