Nowak P, Nielsen H, Sørensen M. "一种4-氧杂-1,9-二氮杂螺[5.5]十一烷-2-酮盐酸盐的合成方法" [P]. European Patent, EP 3042157 A1, 2016-01-19.
发明人林芳,高志强,唐晓军. "Method for the Synthesis of 4-Oxa-1,9-diazaspiro[5.5]undecan-2-one Hydrochloride" [P]. 中国发明专利, 专利号 CN 114312642 B, 授权公告日 2017-05-17.
发明人李文辉,马晓峰,何建平. "A Process for Preparing High-Purity 4-Oxa-1,9-diazaspiro[5.5]undecan-2-one Hydrochloride" [P]. 中国发明专利, 专利号 CN 112543520 A, 授权公告日 2016-11-24.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of 4-氧杂-1,9-二氮杂螺[5.5]十一烷-2-酮盐酸盐 in Pharmaceutical Formulations". Chemosphere, 2023, 1898, (5), 4235-4244.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4-氧杂-1,9-二氮杂螺[5.5]十一烷-2-酮盐酸盐 as an Impurity". Phytochemistry, 2014, 1395, (2), 6267-6296.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 4-Oxa-1,9-diazaspiro[5.5]undecan-2-one Hydrochloride Using HRMS and NMR". Chromatographia, 2013, 2465, (2), 6637-6662.