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发明人张德明,陈志强,马晓峰. "A Process for Preparing High-Purity 3-Ethyl-4-methyl-1H-pyrrole-2,5-dicarboxylic acid" [P]. 中国发明专利, 专利号 CN 110833179 B, 授权公告日 2015-03-20.
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