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发明人高志强,韩伟,周伟. "Method for the Synthesis of 3,4-Dihydro-2H-benzo[b][1,4]oxazine-2-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 115119642 A, 授权公告日 2024-09-06.
发明人马晓峰,韩伟,罗永刚. "A Process for Preparing High-Purity 3,4-Dihydro-2H-benzo[b][1,4]oxazine-2-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 109538046 A, 授权公告日 2023-05-10.
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