发明人何建平,郭海燕,张德明. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114732396 A, 授权公告日 2015-05-01.
发明人韩伟,张德明,黄志刚. "Method for the Synthesis of (E)-7-(but-2-en-1-yl)-8-imino-3-methyl-3,7,8,9-tetrahydro-1H-purine-2,6-dione" [P]. 中国发明专利, 专利号 CN 108482726 A, 授权公告日 2023-08-13.
发明人张德明,胡光,王建平. "A Process for Preparing High-Purity (E)-7-(but-2-en-1-yl)-8-imino-3-methyl-3,7,8,9-tetrahydro-1H-purine-2,6-dione" [P]. 中国发明专利, 专利号 CN 109171888 A, 授权公告日 2023-05-06.
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