发明人冯建国,刘建华,黄志刚. "Method for the Synthesis of 4-(Dimethylamino)-2-((2,5-dimethylphenyl)amino)nicotinonitrile" [P]. 中国发明专利, 专利号 CN 108710580 A, 授权公告日 2016-10-04.
发明人周伟,胡光,孙丽萍. "A Process for Preparing High-Purity 4-(Dimethylamino)-2-((2,5-dimethylphenyl)amino)nicotinonitrile" [P]. 中国发明专利, 专利号 CN 115665604 B, 授权公告日 2015-04-24.
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