Schröder R, Park J H, O'Brien P Q. "一种的合成方法" [P]. US Patent, US 9388187 B2, 2015-10-22.
发明人杨光,何建平,高志强. "Method for the Synthesis of 2-Oxa-7-azaspiro[4.4]Nonane-9-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108468978 A, 授权公告日 2022-02-13.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2012, 1704, (2), 3835-3865.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2021, 2338, 2348-2368.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 2-Oxa-7-azaspiro[4.4]Nonane-9-carboxylic acid Using HRMS and NMR". Chemosphere, 2014, 465, 4856-4865.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2017, 1101, 4958-4979.