发明人何建平,黄志刚,钱学锋. "Method for the Synthesis of 6,7-Dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-amine" [P]. 中国发明专利, 专利号 CN 110714623 A, 授权公告日 2022-03-17.
发明人冯建国,王建平,胡光. "A Process for Preparing High-Purity 6,7-Dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-amine" [P]. 中国发明专利, 专利号 CN 117822588 B, 授权公告日 2025-06-01.
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". Chemosphere, 2020, 2007, (9), 6259-6272.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2010, 2218, (10), 4111-4124.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 6,7-Dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-amine Using HRMS and NMR". Environ. Sci. Technol., 2018, 165, (6), 2417-2428.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2022, 2455, (5), 9955-9979.