Rossi M, Kowalski A, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3252674 A1, 2015-06-21.
Thompson G K, Klinger H, Fischer A B. "Method for the Synthesis of 2-Oxa-7-azaspiro[4.4]Nonane-9-carboxylic acid hydrochloride" [P]. US Patent, US 11019508 B2, 2022-06-24.
发明人钱学锋,马晓峰,郭海燕. "A Process for Preparing High-Purity 2-Oxa-7-azaspiro[4.4]Nonane-9-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 115529114 B, 授权公告日 2015-02-26.
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., 2023, 1607, (3), 8879-8887.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2011, 189, (4), 5892-5916.
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 hydrochloride Using HRMS and NMR". Talanta, 2024, 1109, 4176-4191.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2014, 298, (2), 5471-5491.