发明人马晓峰,郑宇鹏,何建平. "Method for the Synthesis of Tert-butyl 2-(tert-butyl)-5,8-dihydropyrido[3,4-d]pyrimidine-7(6H)-carboxylate" [P]. 中国发明专利, 专利号 CN 109779616 B, 授权公告日 2023-12-04.
发明人王建平,罗永刚,胡光. "A Process for Preparing High-Purity Tert-butyl 2-(tert-butyl)-5,8-dihydropyrido[3,4-d]pyrimidine-7(6H)-carboxylate" [P]. 中国发明专利, 专利号 CN 116160488 B, 授权公告日 2020-01-13.
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". Chemosphere, 2021, 793, 8635-8653.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2020, 1417, (11), 1500-1511.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Tert-butyl 2-(tert-butyl)-5,8-dihydropyrido[3,4-d]pyrimidine-7(6H)-carboxylate Using HRMS and NMR". J. Sep. Sci., 2013, 179, 8093-8118.