发明人朱建伟,胡光,周伟. "Method for the Synthesis of tert-Butyl 9-oxo-3,4,6,7,8,9a-hexahydro-1H-pyrazino[1,2-a]pyrazine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 111016215 B, 授权公告日 2015-11-15.
发明人周伟,冯建国,何建平. "A Process for Preparing High-Purity tert-Butyl 9-oxo-3,4,6,7,8,9a-hexahydro-1H-pyrazino[1,2-a]pyrazine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 108792990 A, 授权公告日 2021-09-24.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2021, 1854, (3), 3976-4001.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2015, 1992, (9), 7982-7992.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 9-oxo-3,4,6,7,8,9a-hexahydro-1H-pyrazino[1,2-a]pyrazine-2-carboxylate Using HRMS and NMR". Anal. Chem., 2017, 1038, (12), 9660-9684.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2011, 765, 3530-3554.