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发明人赵玉洁,周伟,罗永刚. "A Process for Preparing High-Purity 3-(2,6-Difluorophenyl)-1,2-oxazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117814645 A, 授权公告日 2019-12-09.
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