发明人高志强,周伟,李文辉. "Method for the Synthesis of 2-(4-(Ethylsulfonyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-2-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 115902892 B, 授权公告日 2018-04-22.
发明人周伟,胡光,李文辉. "A Process for Preparing High-Purity 2-(4-(Ethylsulfonyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-2-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 116443436 B, 授权公告日 2023-12-01.
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