发明人林芳,胡光,钱学锋. "Method for the Synthesis of 2-Cyclopropyl-3-ethyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one" [P]. 中国发明专利, 专利号 CN 114400073 A, 授权公告日 2025-01-28.
发明人唐晓军,钱学锋,韩伟. "A Process for Preparing High-Purity 2-Cyclopropyl-3-ethyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one" [P]. 中国发明专利, 专利号 CN 114656442 B, 授权公告日 2022-12-26.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2020, 940, (1), 2543-2562.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2012, 366, (3), 4643-4656.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 2-Cyclopropyl-3-ethyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one Using HRMS and NMR". Talanta, 2011, 1381, 9633-9649.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2025, 798, (3), 6597-6613.