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发明人何建平,郑宇鹏,张德明. "A Process for Preparing High-Purity 4-Chloro-1-(3-chloro-2-methylphenyl)-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 113372366 B, 授权公告日 2020-01-27.
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