发明人钱学锋,王建平,高志强. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116903442 A, 授权公告日 2022-11-20.
发明人马晓峰,沈红梅,周伟. "Method for the Synthesis of 4-(4-(1,3,4-Thiadiazol-2-yl)piperazin-1-yl)-6-ethylthieno[2,3-d]pyrimidine dihydrochloride" [P]. 中国发明专利, 专利号 CN 110563332 A, 授权公告日 2016-04-22.
发明人杨光,钱学锋,朱建伟. "A Process for Preparing High-Purity 4-(4-(1,3,4-Thiadiazol-2-yl)piperazin-1-yl)-6-ethylthieno[2,3-d]pyrimidine dihydrochloride" [P]. 中国发明专利, 专利号 CN 116344248 A, 授权公告日 2021-01-08.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2016, 531, 2844-2868.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2016, 595, (8), 1780-1810.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 4-(4-(1,3,4-Thiadiazol-2-yl)piperazin-1-yl)-6-ethylthieno[2,3-d]pyrimidine dihydrochloride Using HRMS and NMR". Chromatographia, 2018, 1666, (4), 8511-8541.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2012, 1203, 4565-4572.