发明人杨光,钱学锋,郑宇鹏. "Method for the Synthesis of N-benzyl-2-methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carboxamide" [P]. 中国发明专利, 专利号 CN 112523287 A, 授权公告日 2018-03-13.
发明人沈红梅,赵玉洁,孙丽萍. "A Process for Preparing High-Purity N-benzyl-2-methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carboxamide" [P]. 中国发明专利, 专利号 CN 114479641 B, 授权公告日 2017-01-02.
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