发明人李文辉,张德明,赵玉洁. "Method for the Synthesis of 5,5-Difluoro-2-oxa-7-azaspiro[3.5]Nonane" [P]. 中国发明专利, 专利号 CN 114748910 A, 授权公告日 2021-05-01.
Davis P L, Chen K W, Stevens L M. "A Process for Preparing High-Purity 5,5-Difluoro-2-oxa-7-azaspiro[3.5]Nonane" [P]. US Patent, US 10394847 B2, 2019-10-04.
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". Food Chem., 2021, 2472, (11), 7103-7125.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2014, 130, 5521-5549.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 5,5-Difluoro-2-oxa-7-azaspiro[3.5]Nonane Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2018, 308, (6), 1578-1601.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2017, 1135, 4084-4103.