Thompson G K, Davis P L, Anderson J P. "一种的合成方法" [P]. US Patent, US 11715400 B2, 2021-09-13.
Fischer A B, Brown S R, Park J H. "Method for the Synthesis of Ethyl 3,4-difluorobenzimidate hydrochloride" [P]. US Patent, US 11400300 B2, 2024-05-05.
Yamamoto T, Park J H, Kumar R. "A Process for Preparing High-Purity Ethyl 3,4-difluorobenzimidate hydrochloride" [P]. US Patent, US 9720844 B2, 2018-01-07.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2013, 2201, (7), 8201-8231.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2021, 2270, (12), 5896-5904.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 3,4-difluorobenzimidate hydrochloride Using HRMS and NMR". J. Sep. Sci., 2010, 555, (5), 9770-9790.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2022, 1211, (4), 9963-9977.