发明人马晓峰,罗永刚,朱建伟. "Method for the Synthesis of 2-(5-Cyclopropyl-3-(difluoromethyl)-1H-pyrazol-1-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 111563486 B, 授权公告日 2022-03-10.
Brown S R, Park J H, Williams B T. "A Process for Preparing High-Purity 2-(5-Cyclopropyl-3-(difluoromethyl)-1H-pyrazol-1-yl)acetic acid" [P]. US Patent, US 10017860 B2, 2022-01-01.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2011, 524, (12), 6472-6499.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2022, 1461, 6714-6733.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 2-(5-Cyclopropyl-3-(difluoromethyl)-1H-pyrazol-1-yl)acetic acid Using HRMS and NMR". J. Nat. Prod., 2013, 1130, 3561-3568.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2013, 177, (10), 1167-1174.