发明人钱学锋,马晓峰,杨光. "Method for the Synthesis of 1-(2-fluoro-5-methylphenyl)-4-hydroxy-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114500180 B, 授权公告日 2017-07-08.
发明人胡光,马晓峰,徐明华. "A Process for Preparing High-Purity 1-(2-fluoro-5-methylphenyl)-4-hydroxy-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109802822 A, 授权公告日 2017-03-19.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of 1-(2-fluoro-5-methylphenyl)-4-hydroxy-1H-pyrazole-3-carboxylic acid in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2012, 1138, 3649-3675.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-(2-fluoro-5-methylphenyl)-4-hydroxy-1H-pyrazole-3-carboxylic acid as an Impurity". Phytochemistry, 2019, 808, (9), 9749-9757.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2-fluoro-5-methylphenyl)-4-hydroxy-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Anal. Methods, 2020, 1861, (3), 7208-7230.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate 1-(2-fluoro-5-methylphenyl)-4-hydroxy-1H-pyrazole-3-carboxylic acid Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2019, 857, (1), 7331-7342.