发明人陈志强,王建平,黄志刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111997516 A, 授权公告日 2020-06-19.
发明人马晓峰,郭海燕,唐晓军. "Method for the Synthesis of 3-[1-(2-carbamoylethyl)-3-[4-(difluoromethoxy)-3-methoxyphenyl]-1h-pyrazol-4-yl]-2-cyanoprop-2-enoic acid" [P]. 中国发明专利, 专利号 CN 113517700 A, 授权公告日 2016-08-26.
发明人黄志刚,杨光,罗永刚. "A Process for Preparing High-Purity 3-[1-(2-carbamoylethyl)-3-[4-(difluoromethoxy)-3-methoxyphenyl]-1h-pyrazol-4-yl]-2-cyanoprop-2-enoic acid" [P]. 中国发明专利, 专利号 CN 110599448 B, 授权公告日 2021-01-04.
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". Anal. Chem., 2019, 1139, 4989-5019.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2010, 991, (6), 5023-5043.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 3-[1-(2-carbamoylethyl)-3-[4-(difluoromethoxy)-3-methoxyphenyl]-1h-pyrazol-4-yl]-2-cyanoprop-2-enoic acid Using HRMS and NMR". Chemosphere, 2024, 1151, (12), 8971-8982.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2013, 1680, 8495-8501.