发明人郑宇鹏,周伟,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116251372 A, 授权公告日 2022-10-13.
发明人罗永刚,赵玉洁,马晓峰. "Method for the Synthesis of 4-Amino-1-ethyl-2,5-dihydro-1H-pyrrole-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 117978476 A, 授权公告日 2024-03-12.
发明人何建平,郑宇鹏,马晓峰. "A Process for Preparing High-Purity 4-Amino-1-ethyl-2,5-dihydro-1H-pyrrole-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 114390610 A, 授权公告日 2023-01-15.
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