Schröder R, Johansson L, Björnsson E. "一种的合成方法" [P]. European Patent, EP 3194644 A1, 2015-02-12.
Kowalski A, Lefèvre J P, Sørensen M. "Method for the Synthesis of 6,7-Difluoroindolin-2-one" [P]. European Patent, EP 3155695 A1, 2020-10-21.
Park J H, Yamamoto T, Patel M V. "A Process for Preparing High-Purity 6,7-Difluoroindolin-2-one" [P]. US Patent, US 9321167 B2, 2018-11-12.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2022, 371, 3718-3747.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2013, 2037, 4723-4738.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 6,7-Difluoroindolin-2-one Using HRMS and NMR". Anal. Methods, 2010, 2394, (10), 3711-3725.