发明人杨光,李文辉,张德明. "Method for the Synthesis of 4-Chloro-2-methyl-7,8-dihydro-5H-pyrano[4,3-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 110409059 A, 授权公告日 2015-04-15.
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