Nowak P, Martínez F, Kowalski A. "一种的合成方法" [P]. European Patent, EP 3244484 A1, 2015-09-21.
Lefèvre J P, Martínez F, Rossi M. "Method for the Synthesis of 2-oxaspiro[4.4]nonane-1,3-dione" [P]. European Patent, EP 3726179 A1, 2023-03-13.
发明人周伟,赵玉洁,黄志刚. "A Process for Preparing High-Purity 2-oxaspiro[4.4]nonane-1,3-dione" [P]. 中国发明专利, 专利号 CN 111532600 B, 授权公告日 2016-06-12.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2022, 900, (8), 6972-6978.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2021, 2141, (7), 850-863.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 2-oxaspiro[4.4]nonane-1,3-dione Using HRMS and NMR". Chromatographia, 2011, 2058, 708-720.