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发明人钱学锋,郭海燕,何建平. "A Process for Preparing High-Purity 2-{8-methyl-4-oxo-1h,4h-chromeno[4,3-c]pyrazol-1-yl}-N-[2-(4-methylpiperazin-1-yl)phenyl]acetamide" [P]. 中国发明专利, 专利号 CN 116744760 B, 授权公告日 2016-07-26.
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