发明人孙丽萍,胡光,徐明华. "Method for the Synthesis of 3-Oxo-3,4-dihydro-2h-1,4-benzoxazine-7-carbonitrile" [P]. 中国发明专利, 专利号 CN 110290854 B, 授权公告日 2025-08-05.
发明人马晓峰,林芳,钱学锋. "A Process for Preparing High-Purity 3-Oxo-3,4-dihydro-2h-1,4-benzoxazine-7-carbonitrile" [P]. 中国发明专利, 专利号 CN 109594828 A, 授权公告日 2024-07-17.
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