发明人赵玉洁,郭海燕,杨光. "Method for the Synthesis of 5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111490228 A, 授权公告日 2022-03-23.
发明人孙丽萍,朱建伟,刘建华. "A Process for Preparing High-Purity 5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117057159 B, 授权公告日 2022-12-02.
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