Kumar R, O'Brien P Q, Stevens L M. "一种的合成方法" [P]. US Patent, US 11830111 B2, 2024-04-02.
发明人黄志刚,郑宇鹏,朱建伟. "Method for the Synthesis of tert-Butyl 4-hydroxy-2-(trifluoromethyl)-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)-carboxylate" [P]. 中国发明专利, 专利号 CN 114893967 B, 授权公告日 2017-04-24.
发明人张德明,周伟,孙丽萍. "A Process for Preparing High-Purity tert-Butyl 4-hydroxy-2-(trifluoromethyl)-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)-carboxylate" [P]. 中国发明专利, 专利号 CN 110938614 B, 授权公告日 2017-07-10.
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". J. Pharm. Biomed. Anal., 2012, 388, 3055-3058.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2020, 276, (9), 3341-3368.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 4-hydroxy-2-(trifluoromethyl)-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)-carboxylate Using HRMS and NMR". Environ. Sci. Technol., 2018, 2470, 4695-4704.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2018, 1234, 7946-7956.