Williams B T, Schröder R, Chen K W. "一种的合成方法" [P]. US Patent, US 10760262 B2, 2019-06-18.
Lee S K, Williams B T, Roberts E F. "Method for the Synthesis of 2-(Thiophen-3-yl)-2,7-diazaspiro[4.4]nonan-3-one" [P]. US Patent, US 11510056 B2, 2020-04-07.
发明人陈志强,林芳,李文辉. "A Process for Preparing High-Purity 2-(Thiophen-3-yl)-2,7-diazaspiro[4.4]nonan-3-one" [P]. 中国发明专利, 专利号 CN 109682242 B, 授权公告日 2020-12-17.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2025, 1209, (5), 3365-3389.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2022, 1553, 6642-6646.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 2-(Thiophen-3-yl)-2,7-diazaspiro[4.4]nonan-3-one Using HRMS and NMR". J. Pharm. Biomed. Anal., 2025, 370, (11), 9988-10013.