发明人李文辉,周伟,郑宇鹏. "Method for the Synthesis of 2-Ethyl-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine" [P]. 中国发明专利, 专利号 CN 115354663 B, 授权公告日 2022-04-22.
发明人杨光,赵玉洁,马晓峰. "A Process for Preparing High-Purity 2-Ethyl-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine" [P]. 中国发明专利, 专利号 CN 109397818 A, 授权公告日 2025-12-27.
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