发明人何建平,周伟,罗永刚. "Method for the Synthesis of 4-Cyano-6-(difluoromethyl)-2-hydroxypyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109878507 A, 授权公告日 2025-09-15.
Williams B T, Brown S R, O'Brien P Q. "A Process for Preparing High-Purity 4-Cyano-6-(difluoromethyl)-2-hydroxypyridine-3-carboxylic acid" [P]. US Patent, US 11195072 B2, 2022-05-13.
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