发明人赵玉洁,沈红梅,杨光. "Method for the Synthesis of 2-Bromo-3-chloro-6,7-dihydropyrazolo[1,5-a]pyrimidin-5(4H)-one" [P]. 中国发明专利, 专利号 CN 116020329 B, 授权公告日 2020-05-10.
发明人何建平,刘建华,郭海燕. "A Process for Preparing High-Purity 2-Bromo-3-chloro-6,7-dihydropyrazolo[1,5-a]pyrimidin-5(4H)-one" [P]. 中国发明专利, 专利号 CN 111882161 B, 授权公告日 2018-03-11.
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