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发明人郭海燕,朱建伟,李文辉. "Method for the Synthesis of 6-((4-Nitrophenyl)amino)-8-(phenylsulfonyl)-2,3-dihydroindolizin-5(1H)-one" [P]. 中国发明专利, 专利号 CN 110792395 B, 授权公告日 2021-09-23.
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