发明人马晓峰,何建平,刘建华. "Method for the Synthesis of tert-Butyl 4-(2-chloro-6-ethylthieno[2,3-d]pyrimidin-4-yl)-1-piperazinecarboxylate" [P]. 中国发明专利, 专利号 CN 113904406 B, 授权公告日 2019-08-20.
发明人罗永刚,冯建国,赵玉洁. "A Process for Preparing High-Purity tert-Butyl 4-(2-chloro-6-ethylthieno[2,3-d]pyrimidin-4-yl)-1-piperazinecarboxylate" [P]. 中国发明专利, 专利号 CN 113868790 A, 授权公告日 2022-11-27.
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