发明人杨光,钱学锋,黄志刚. "Method for the Synthesis of 8-(2-Aminoethyl)-5-hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 113041482 B, 授权公告日 2019-07-11.
发明人钱学锋,陈志强,徐明华. "A Process for Preparing High-Purity 8-(2-Aminoethyl)-5-hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 111249815 B, 授权公告日 2018-03-21.
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