Brown S R, Yamamoto T, Klinger H. "一种的合成方法" [P]. US Patent, US 11696885 B2, 2017-11-12.
发明人刘建华,杨光,钱学锋. "Method for the Synthesis of 1-(Pyrazolo[1,5-a]pyrazin-4-yl)-1H-imidazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111353940 B, 授权公告日 2019-09-13.
发明人周伟,钱学锋,唐晓军. "A Process for Preparing High-Purity 1-(Pyrazolo[1,5-a]pyrazin-4-yl)-1H-imidazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114893863 A, 授权公告日 2019-09-28.
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