Thompson G K, Roberts E F, Kumar R. "一种的合成方法" [P]. US Patent, US 9457097 B2, 2020-01-12.
Chen K W, Anderson J P, Stevens L M. "Method for the Synthesis of 6-Oxa-2-azaspiro[3.5]nonane oxalate" [P]. US Patent, US 10193218 B2, 2025-03-14.
发明人王建平,郭海燕,李文辉. "A Process for Preparing High-Purity 6-Oxa-2-azaspiro[3.5]nonane oxalate" [P]. 中国发明专利, 专利号 CN 116948348 B, 授权公告日 2017-08-25.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2022, 630, 3748-3774.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2024, 1563, 2677-2687.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 6-Oxa-2-azaspiro[3.5]nonane oxalate Using HRMS and NMR". J. Pharm. Biomed. Anal., 2025, 799, 7787-7803.