Nielsen H, Johansson L, Lefèvre J P. "一种的合成方法" [P]. European Patent, EP 3449017 A1, 2021-08-14.
发明人赵玉洁,周伟,何建平. "Method for the Synthesis of 7,7-Difluoro-2-methyl-2,9-diazaspiro[5.5]Undecane" [P]. 中国发明专利, 专利号 CN 111822468 B, 授权公告日 2021-04-06.
Park J H, Thompson G K, Fischer A B. "A Process for Preparing High-Purity 7,7-Difluoro-2-methyl-2,9-diazaspiro[5.5]Undecane" [P]. US Patent, US 9690057 B2, 2017-03-24.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2022, 1721, (5), 9019-9039.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2014, 1025, (5), 9363-9370.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 7,7-Difluoro-2-methyl-2,9-diazaspiro[5.5]Undecane Using HRMS and NMR". Sci. Total Environ., 2015, 1664, 7140-7150.