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发明人赵玉洁,王建平,徐明华. "A Process for Preparing High-Purity Tert-butyl 3-formyl-1h,4h,5h,6h,7h-pyrazolo[4,3-c]pyridine-5-carboxylate" [P]. 中国发明专利, 专利号 CN 111771127 B, 授权公告日 2018-10-03.
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