Lee S K, Stevens L M, Mueller T. "一种的合成方法" [P]. US Patent, US 9873852 B2, 2020-06-14.
Fischer A B, Park J H, Schröder R. "Method for the Synthesis of ethyl 4-chlorothieno[2,3-d]pyrimidine-2-carboxylate" [P]. US Patent, US 11963732 B2, 2024-08-19.
发明人周伟,韩伟,何建平. "A Process for Preparing High-Purity ethyl 4-chlorothieno[2,3-d]pyrimidine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 108489124 B, 授权公告日 2023-02-19.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2022, 2253, (6), 1356-1379.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2020, 1553, (11), 7846-7854.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of ethyl 4-chlorothieno[2,3-d]pyrimidine-2-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2021, 1693, (10), 4016-4033.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2020, 2372, (7), 1846-1871.