发明人李文辉,王建平,马晓峰. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117394305 A, 授权公告日 2024-10-09.
Kumar R, Davis P L, Klinger H. "Method for the Synthesis of 1,5-Dimethyl-1H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione" [P]. US Patent, US 9140468 B2, 2016-07-15.
Rossi M, Björnsson E, Lefèvre J P. "A Process for Preparing High-Purity 1,5-Dimethyl-1H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione" [P]. European Patent, EP 3185382 A1, 2017-11-24.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2021, 1137, (11), 9601-9612.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2011, 447, (2), 8894-8913.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 1,5-Dimethyl-1H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione Using HRMS and NMR". J. Nat. Prod., 2022, 2247, (10), 7560-7588.