发明人徐明华,周伟,郭海燕. "Method for the Synthesis of tert-Butyl 9-(2-methoxy-2-oxoethyl)-3-azaspiro[5.5]undecane-3-carboxylate" [P]. 中国发明专利, 专利号 CN 115380922 B, 授权公告日 2020-06-22.
发明人李文辉,黄志刚,高志强. "A Process for Preparing High-Purity tert-Butyl 9-(2-methoxy-2-oxoethyl)-3-azaspiro[5.5]undecane-3-carboxylate" [P]. 中国发明专利, 专利号 CN 112995711 B, 授权公告日 2016-03-28.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2022, 1141, 874-896.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2010, 1412, (6), 5755-5759.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 9-(2-methoxy-2-oxoethyl)-3-azaspiro[5.5]undecane-3-carboxylate Using HRMS and NMR". Chromatographia, 2024, 1586, (9), 2179-2194.