Kowalski A, Johansson L, Nielsen H. "一种1-(2,4-difluorophenyl)-5-thien-2-yl-1H-pyrazole-3-carboxylic acid的合成方法" [P]. European Patent, EP 3755415 A1, 2023-04-05.
发明人郭海燕,赵玉洁,唐晓军. "Method for the Synthesis of 1-(2,4-difluorophenyl)-5-thien-2-yl-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108307541 B, 授权公告日 2023-11-07.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of 1-(2,4-difluorophenyl)-5-thien-2-yl-1H-pyrazole-3-carboxylic acid in Pharmaceutical Formulations". Phytochemistry, 2012, 1584, (7), 4093-4099.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-(2,4-difluorophenyl)-5-thien-2-yl-1H-pyrazole-3-carboxylic acid as an Impurity". Chromatographia, 2010, 1744, (6), 614-620.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2,4-difluorophenyl)-5-thien-2-yl-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". J. Nat. Prod., 2013, 583, 6539-6556.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate 1-(2,4-difluorophenyl)-5-thien-2-yl-1H-pyrazole-3-carboxylic acid Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2022, 507, (7), 2282-2295.