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发明人孙丽萍,郭海燕,王建平. "A Process for Preparing High-Purity 3-Bromo-7-oxo-4,7-dihydropyrazolo[1,5-a]-pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110439567 A, 授权公告日 2018-09-26.
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