Lee S K, Stevens L M, O'Brien P Q. "Method for the Synthesis of 8-Cyclopentyl-5-methyl-2-(methylthio)pyrido[2,3-d]pyrimidin-7(8H)-one" [P]. US Patent, US 9656437 B2, 2019-02-19.
发明人徐明华,胡光,罗永刚. "A Process for Preparing High-Purity 8-Cyclopentyl-5-methyl-2-(methylthio)pyrido[2,3-d]pyrimidin-7(8H)-one" [P]. 中国发明专利, 专利号 CN 115310093 A, 授权公告日 2018-01-21.
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