Nielsen H, Johansson L, Björnsson E. "一种的合成方法" [P]. European Patent, EP 3782291 A1, 2016-03-05.
Lefèvre J P, Schröder R, Sørensen M. "Method for the Synthesis of 6-Ethyl-3-propylthieno[2,3-d]pyrimidin-4(3H)-one" [P]. European Patent, EP 3348252 A1, 2017-07-03.
Fischer A B, Williams B T, Lee S K. "A Process for Preparing High-Purity 6-Ethyl-3-propylthieno[2,3-d]pyrimidin-4(3H)-one" [P]. US Patent, US 9925321 B2, 2017-08-07.
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". Environ. Sci. Technol., 2019, 727, (11), 925-937.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2019, 1180, (1), 3197-3210.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 6-Ethyl-3-propylthieno[2,3-d]pyrimidin-4(3H)-one Using HRMS and NMR". Sci. Total Environ., 2019, 982, (3), 1362-1388.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2017, 1453, (7), 283-291.