发明人王建平,朱建伟,徐明华. "Method for the Synthesis of 2-Nitrophenanthridin-6(5H)-one" [P]. 中国发明专利, 专利号 CN 108470937 B, 授权公告日 2017-02-16.
发明人沈红梅,高志强,马晓峰. "A Process for Preparing High-Purity 2-Nitrophenanthridin-6(5H)-one" [P]. 中国发明专利, 专利号 CN 111118657 B, 授权公告日 2015-10-05.
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