Chen K W, Stevens L M, Williams B T. "Method for the Synthesis of tert-Butyl 3-oxo-1-oxa-7-azaspiro[4.5]decane-7-carboxylate" [P]. US Patent, US 11524278 B2, 2019-09-08.
发明人黄志刚,徐明华,罗永刚. "A Process for Preparing High-Purity tert-Butyl 3-oxo-1-oxa-7-azaspiro[4.5]decane-7-carboxylate" [P]. 中国发明专利, 专利号 CN 111456972 B, 授权公告日 2019-05-24.
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, 2021, 1964, (10), 9472-9478.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2016, 1223, (12), 9083-9108.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 3-oxo-1-oxa-7-azaspiro[4.5]decane-7-carboxylate Using HRMS and NMR". J. Chromatogr. A, 2025, 220, (3), 7173-7179.