发明人杨光,钱学锋,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113608352 A, 授权公告日 2016-02-09.
发明人张德明,赵玉洁,王建平. "Method for the Synthesis of tert-Butyl 7-cyano-5-oxa-2-azaspiro[3.4]octane-2-carboxylate" [P]. 中国发明专利, 专利号 CN 114408039 B, 授权公告日 2018-03-01.
发明人胡光,罗永刚,张德明. "A Process for Preparing High-Purity tert-Butyl 7-cyano-5-oxa-2-azaspiro[3.4]octane-2-carboxylate" [P]. 中国发明专利, 专利号 CN 108541837 A, 授权公告日 2015-11-27.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2018, 276, (6), 1187-1214.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2022, 1718, (8), 242-250.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 7-cyano-5-oxa-2-azaspiro[3.4]octane-2-carboxylate Using HRMS and NMR". Chromatographia, 2016, 1329, (2), 6059-6080.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2017, 1321, (4), 3160-3184.