Thompson G K, Chen K W, Stevens L M. "Method for the Synthesis of 2-((Benzyloxy)carbonyl)-2-azaspiro[4.4]Nonane-3-carboxylic acid" [P]. US Patent, US 9628370 B2, 2024-07-23.
发明人刘建华,胡光,沈红梅. "A Process for Preparing High-Purity 2-((Benzyloxy)carbonyl)-2-azaspiro[4.4]Nonane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113613670 A, 授权公告日 2019-09-14.
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". Chemosphere, 2014, 2282, (2), 9907-9924.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2018, 1642, 419-447.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 2-((Benzyloxy)carbonyl)-2-azaspiro[4.4]Nonane-3-carboxylic acid Using HRMS and NMR". Phytochemistry, 2010, 1398, (5), 3270-3296.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2025, 1378, 8454-8466.