发明人杨光,徐明华,黄志刚. "Method for the Synthesis of Tert-butyl 7-ethynyl-5-azaspiro[2.4]Heptane-5-carboxylate" [P]. 中国发明专利, 专利号 CN 109033395 A, 授权公告日 2015-09-07.
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