Williams B T, Davis P L, Lee S K. "Method for the Synthesis of 7-(But-2-en-1-yl)-3-methyl-8-(2-(1-phenylethylidene)hydrazinyl)-3,7-dihydro-1H-purine-2,6-dione" [P]. US Patent, US 11510348 B2, 2022-10-27.
发明人李文辉,刘建华,高志强. "A Process for Preparing High-Purity 7-(But-2-en-1-yl)-3-methyl-8-(2-(1-phenylethylidene)hydrazinyl)-3,7-dihydro-1H-purine-2,6-dione" [P]. 中国发明专利, 专利号 CN 115504908 A, 授权公告日 2024-06-12.
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