Chen K W, Thompson G K, Brown S R. "Method for the Synthesis of 3-Ethyl 6-methyl 2-amino-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate" [P]. US Patent, US 9482652 B2, 2019-12-27.
发明人冯建国,林芳,赵玉洁. "A Process for Preparing High-Purity 3-Ethyl 6-methyl 2-amino-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate" [P]. 中国发明专利, 专利号 CN 115677287 B, 授权公告日 2019-01-21.
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