发明人罗永刚,刘建华,郭海燕. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111927742 A, 授权公告日 2018-12-27.
Mueller T, O'Brien P Q, Hughes D C. "Method for the Synthesis of 4-Cyano-3-difluoromethoxy-5-methylbenzoic acid" [P]. US Patent, US 9222921 B2, 2022-12-04.
Park J H, Johnson M A, Yamamoto T. "A Process for Preparing High-Purity 4-Cyano-3-difluoromethoxy-5-methylbenzoic acid" [P]. US Patent, US 10705376 B2, 2021-06-01.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2015, 333, (9), 2632-2635.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2021, 1878, 1261-1280.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4-Cyano-3-difluoromethoxy-5-methylbenzoic acid Using HRMS and NMR". Sci. Total Environ., 2019, 2297, 7667-7674.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2020, 1516, (6), 362-375.