Mueller T C, Björnsson E, Rossi M. "Method for the Synthesis of 1-(2,4-Dichlorophenyl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one" [P]. European Patent, EP 3953480 A1, 2019-12-28.
发明人沈红梅,郭海燕,陈志强. "A Process for Preparing High-Purity 1-(2,4-Dichlorophenyl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 110747282 B, 授权公告日 2017-04-25.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2017, 419, (10), 3873-3885.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2012, 111, (11), 7464-7483.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2,4-Dichlorophenyl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2021, 944, 9274-9282.