Björnsson E, Mueller T C, Johansson L. "Method for the Synthesis of 5-bromo-2-chloro-4-methylpyridine-3-carboxylic acid" [P]. European Patent, EP 3909771 A1, 2022-03-25.
发明人郭海燕,李文辉,王建平. "A Process for Preparing High-Purity 5-bromo-2-chloro-4-methylpyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117273955 B, 授权公告日 2017-09-04.
参考文献 Literature
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