发明人冯建国,何建平,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112354095 A, 授权公告日 2024-04-18.
发明人郑宇鹏,黄志刚,罗永刚. "Method for the Synthesis of 2-Ethyl-N-(4-oxo-1-phenyl-1,4-dihydro-5H-pyrazolo[3,4-d]pyrimidin-5-yl)butanamide" [P]. 中国发明专利, 专利号 CN 116574136 A, 授权公告日 2015-02-01.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2022, 2030, 9276-9284.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2019, 537, (5), 2486-2489.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 2-Ethyl-N-(4-oxo-1-phenyl-1,4-dihydro-5H-pyrazolo[3,4-d]pyrimidin-5-yl)butanamide Using HRMS and NMR". Environ. Sci. Technol., 2022, 1050, 1033-1040.