发明人唐晓军,钱学锋,刘建华. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112761670 A, 授权公告日 2021-11-28.
发明人马晓峰,徐明华,王建平. "Method for the Synthesis of N-(Pyrazin-2-yl)-1-oxa-7-azaspiro[4.4]nonan-3-amine" [P]. 中国发明专利, 专利号 CN 110062923 B, 授权公告日 2021-10-22.
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