发明人王建平,朱建伟,钱学锋. "Method for the Synthesis of 2-Methyl-3-oxo-3,4-dihydro-2h-1,4-benzoxazine-6-carbaldehyde" [P]. 中国发明专利, 专利号 CN 111111705 A, 授权公告日 2020-03-04.
发明人杨光,李文辉,朱建伟. "A Process for Preparing High-Purity 2-Methyl-3-oxo-3,4-dihydro-2h-1,4-benzoxazine-6-carbaldehyde" [P]. 中国发明专利, 专利号 CN 110023753 B, 授权公告日 2016-04-13.
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