发明人杨光,沈红梅,何建平. "Method for the Synthesis of 8-(Dipentylamino)-3-methyl-3,7-dihydro-1H-purine-2,6-dione" [P]. 中国发明专利, 专利号 CN 111859369 B, 授权公告日 2019-12-03.
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