发明人杨光,朱建伟,郑宇鹏. "Method for the Synthesis of 4-Methyl-2-oxo-2,5,6,7-tetrahydro-1H-cyclopenta[b]pyridine-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 109692361 B, 授权公告日 2022-09-05.
发明人孙丽萍,徐明华,钱学锋. "A Process for Preparing High-Purity 4-Methyl-2-oxo-2,5,6,7-tetrahydro-1H-cyclopenta[b]pyridine-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 115220270 A, 授权公告日 2023-04-02.
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