Nowak P, Schröder R, Lefèvre J P. "一种的合成方法" [P]. European Patent, EP 3493207 A1, 2023-09-07.
发明人罗永刚,张德明,王建平. "Method for the Synthesis of 4-Cyano-2-(difluoromethyl)-5-ethylbenzoic acid" [P]. 中国发明专利, 专利号 CN 114543785 B, 授权公告日 2020-09-07.
发明人赵玉洁,钱学锋,周伟. "A Process for Preparing High-Purity 4-Cyano-2-(difluoromethyl)-5-ethylbenzoic acid" [P]. 中国发明专利, 专利号 CN 112606102 B, 授权公告日 2021-09-02.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2020, 1615, (6), 732-739.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2011, 531, 9282-9299.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 4-Cyano-2-(difluoromethyl)-5-ethylbenzoic acid Using HRMS and NMR". J. Agric. Food Chem., 2023, 1339, (10), 655-659.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2021, 2391, 5616-5641.