发明人李文辉,何建平,杨光. "Method for the Synthesis of 6-(6-Chloropyridin-3-yl)-5,7-diazaspiro[3.4]Oct-5-en-8-one" [P]. 中国发明专利, 专利号 CN 108908620 A, 授权公告日 2016-09-11.
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