发明人陈志强,林芳,高志强. "Method for the Synthesis of 2-(tert-Butoxycarbonyl)-2-azaspiro[5.5]undecane-9-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115610374 A, 授权公告日 2018-04-07.
发明人张德明,朱建伟,刘建华. "A Process for Preparing High-Purity 2-(tert-Butoxycarbonyl)-2-azaspiro[5.5]undecane-9-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109848708 B, 授权公告日 2018-01-11.
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". Chemosphere, 2017, 844, (11), 1169-1186.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2013, 2449, 7854-7871.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 2-(tert-Butoxycarbonyl)-2-azaspiro[5.5]undecane-9-carboxylic acid Using HRMS and NMR". Molecules, 2012, 88, (7), 3998-4027.