发明人孙丽萍,郑宇鹏,何建平. "Method for the Synthesis of 1,4-Dihydropyrido[3,4-d]pyrimidin-4-ol" [P]. 中国发明专利, 专利号 CN 111439229 A, 授权公告日 2015-06-18.
发明人刘建华,高志强,罗永刚. "A Process for Preparing High-Purity 1,4-Dihydropyrido[3,4-d]pyrimidin-4-ol" [P]. 中国发明专利, 专利号 CN 113698818 B, 授权公告日 2023-01-24.
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". Rapid Commun. Mass Spectrom., 2022, 2052, (10), 4447-4477.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2019, 965, (8), 934-938.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 1,4-Dihydropyrido[3,4-d]pyrimidin-4-ol Using HRMS and NMR". Biomed. Chromatogr., 2021, 969, (11), 9014-9031.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2011, 322, 2045-2048.