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发明人徐明华,马晓峰,钱学锋. "A Process for Preparing High-Purity N1-(2,2-Diethoxyethyl)-N2-(2,3-dimethylphenyl)oxalamide" [P]. 中国发明专利, 专利号 CN 109955983 A, 授权公告日 2015-02-23.
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