Fischer A B, Patel M V, Williams B T. "Method for the Synthesis of 1-(1-Oxa-4,9-diazaspiro[5.5]undecan-9-yl)butan-1-one" [P]. US Patent, US 10786867 B2, 2018-09-13.
发明人唐晓军,沈红梅,马晓峰. "A Process for Preparing High-Purity 1-(1-Oxa-4,9-diazaspiro[5.5]undecan-9-yl)butan-1-one" [P]. 中国发明专利, 专利号 CN 108985248 B, 授权公告日 2021-11-18.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2017, 1729, 9947-9954.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2011, 1956, 4721-4728.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 1-(1-Oxa-4,9-diazaspiro[5.5]undecan-9-yl)butan-1-one Using HRMS and NMR". Talanta, 2018, 1280, 5411-5416.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2016, 364, (2), 4311-4314.