发明人郑宇鹏,郭海燕,张德明. "Method for the Synthesis of Ethyl 5,7-dimethyl-2-(methylthio)pyrazolo[1,5-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 112308914 B, 授权公告日 2019-07-17.
发明人杨光,唐晓军,赵玉洁. "A Process for Preparing High-Purity Ethyl 5,7-dimethyl-2-(methylthio)pyrazolo[1,5-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 109827707 B, 授权公告日 2024-11-17.
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