发明人王建平,刘建华,杨光. "Method for the Synthesis of 4-Hydroxy-2-oxo-2,5-dihydro-1H-pyrrole-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 108679053 A, 授权公告日 2023-04-20.
发明人孙丽萍,韩伟,沈红梅. "A Process for Preparing High-Purity 4-Hydroxy-2-oxo-2,5-dihydro-1H-pyrrole-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 116321434 A, 授权公告日 2017-09-17.
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