发明人高志强,何建平,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109645769 A, 授权公告日 2020-02-18.
发明人李文辉,钱学锋,刘建华. "Method for the Synthesis of 2-Amino-1-(3,4-difluorophenyl)-4,5-dimethyl-1H-pyrrole-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 108822318 B, 授权公告日 2022-06-25.
发明人黄志刚,罗永刚,郑宇鹏. "A Process for Preparing High-Purity 2-Amino-1-(3,4-difluorophenyl)-4,5-dimethyl-1H-pyrrole-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 117555396 A, 授权公告日 2025-03-09.
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