发明人李文辉,郭海燕,冯建国. "Method for the Synthesis of (S)-7,8-Difluoro-3-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine" [P]. 中国发明专利, 专利号 CN 108990073 A, 授权公告日 2018-05-20.
发明人郑宇鹏,沈红梅,张德明. "A Process for Preparing High-Purity (S)-7,8-Difluoro-3-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine" [P]. 中国发明专利, 专利号 CN 115763211 B, 授权公告日 2017-02-14.
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