发明人刘建华,赵玉洁,杨光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108971323 A, 授权公告日 2015-06-01.
发明人王建平,李文辉,孙丽萍. "Method for the Synthesis of (S)-2,3-difluoro-4-hydroxy-5-(pyrrolidin-2-yl)benzonitrile" [P]. 中国发明专利, 专利号 CN 112127591 B, 授权公告日 2019-01-05.
Davis P L, Chen K W, Lee S K. "A Process for Preparing High-Purity (S)-2,3-difluoro-4-hydroxy-5-(pyrrolidin-2-yl)benzonitrile" [P]. US Patent, US 11131449 B2, 2025-04-17.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2012, 1958, (10), 8343-8366.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2020, 1643, (2), 7269-7294.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of (S)-2,3-difluoro-4-hydroxy-5-(pyrrolidin-2-yl)benzonitrile Using HRMS and NMR". Biomed. Chromatogr., 2023, 1228, 7893-7923.