Davis P L, Patel M V, Klinger H. "一种的合成方法" [P]. US Patent, US 11569273 B2, 2020-10-22.
Kowalski A, Nowak P, Johansson L. "Method for the Synthesis of 3,3-Difluoro-1-(isopropoxycarbonyl)cyclobutanecarboxylic acid" [P]. European Patent, EP 3059672 A1, 2017-01-09.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2021, 760, (3), 5079-5091.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2021, 2241, 8015-8036.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 3,3-Difluoro-1-(isopropoxycarbonyl)cyclobutanecarboxylic acid Using HRMS and NMR". Environ. Sci. Technol., 2012, 2414, (8), 8854-8865.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2012, 2047, (1), 8860-8870.