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发明人郑宇鹏,马晓峰,胡光. "Method for the Synthesis of 7-Ethyl-3-methyl-8-(pentylamino)-3,7-dihydro-1H-purine-2,6-dione" [P]. 中国发明专利, 专利号 CN 112567054 A, 授权公告日 2018-09-14.
发明人张德明,赵玉洁,唐晓军. "A Process for Preparing High-Purity 7-Ethyl-3-methyl-8-(pentylamino)-3,7-dihydro-1H-purine-2,6-dione" [P]. 中国发明专利, 专利号 CN 114117600 A, 授权公告日 2020-03-19.
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