发明人杨光,陈志强,李文辉. "Method for the Synthesis of N-(2-chloroethyl)-2,3-dihydro-4H-benzo[b][1,4]oxazine-4-carboxamide" [P]. 中国发明专利, 专利号 CN 116401014 B, 授权公告日 2017-09-13.
发明人马晓峰,郭海燕,黄志刚. "A Process for Preparing High-Purity N-(2-chloroethyl)-2,3-dihydro-4H-benzo[b][1,4]oxazine-4-carboxamide" [P]. 中国发明专利, 专利号 CN 110031450 A, 授权公告日 2023-09-13.
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