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发明人郑宇鹏,刘建华,孙丽萍. "Method for the Synthesis of 3-(((1,3-Dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl)amino)benzoic acid" [P]. 中国发明专利, 专利号 CN 113012853 B, 授权公告日 2019-05-14.
发明人郭海燕,黄志刚,唐晓军. "A Process for Preparing High-Purity 3-(((1,3-Dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl)amino)benzoic acid" [P]. 中国发明专利, 专利号 CN 116646443 B, 授权公告日 2024-02-08.
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