发明人张德明,钱学锋,黄志刚. "Method for the Synthesis of 5-Chloro-3-(3,5-dibromo-4-hydroxybenzylidene)indolin-2-one" [P]. 中国发明专利, 专利号 CN 110498309 A, 授权公告日 2015-01-27.
Björnsson E, Nowak P, Martínez F. "A Process for Preparing High-Purity 5-Chloro-3-(3,5-dibromo-4-hydroxybenzylidene)indolin-2-one" [P]. European Patent, EP 3966243 A1, 2018-12-13.
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