发明人杨光,马晓峰,郭海燕. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108774984 A, 授权公告日 2016-12-15.
发明人何建平,赵玉洁,徐明华. "Method for the Synthesis of 9-((3-Chloro-4-methylphenyl)sulfonyl)-1,5-dioxa-9-azaspiro[5.5]undecane" [P]. 中国发明专利, 专利号 CN 111308340 B, 授权公告日 2016-09-15.
发明人王建平,胡光,郭海燕. "A Process for Preparing High-Purity 9-((3-Chloro-4-methylphenyl)sulfonyl)-1,5-dioxa-9-azaspiro[5.5]undecane" [P]. 中国发明专利, 专利号 CN 117979094 A, 授权公告日 2021-03-01.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2012, 807, (9), 7252-7274.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2021, 224, 1167-1195.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 9-((3-Chloro-4-methylphenyl)sulfonyl)-1,5-dioxa-9-azaspiro[5.5]undecane Using HRMS and NMR". J. Chromatogr. A, 2020, 1794, (2), 4416-4437.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2021, 501, (2), 211-233.