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发明人徐明华,赵玉洁,黄志刚. "A Process for Preparing High-Purity 4H,5H,6H,7H-[1,2,3,4]Tetrazolo[1,5-a]pyrimidine" [P]. 中国发明专利, 专利号 CN 109485655 B, 授权公告日 2021-03-22.
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