Williams B T, Schröder R, Johnson M A. "Method for the Synthesis of 3-benzyl-7-butyl-8-(chloromethyl)-3,7-dihydro-1H-purine-2,6-dione" [P]. US Patent, US 10078221 B2, 2023-01-02.
发明人马晓峰,郑宇鹏,张德明. "A Process for Preparing High-Purity 3-benzyl-7-butyl-8-(chloromethyl)-3,7-dihydro-1H-purine-2,6-dione" [P]. 中国发明专利, 专利号 CN 108015713 B, 授权公告日 2021-09-13.
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