发明人何建平,赵玉洁,李文辉. "Method for the Synthesis of 7-Benzyl-1,3-dipropyl-3,7-dihydro-1H-purine-2,6-dione" [P]. 中国发明专利, 专利号 CN 113416617 B, 授权公告日 2015-01-13.
发明人沈红梅,孙丽萍,黄志刚. "A Process for Preparing High-Purity 7-Benzyl-1,3-dipropyl-3,7-dihydro-1H-purine-2,6-dione" [P]. 中国发明专利, 专利号 CN 110469696 A, 授权公告日 2020-03-28.
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