发明人何建平,杨光,唐晓军. "Method for the Synthesis of 1-Isopentyl-7-(methylthio)-1H-pyrimido-[4,5-d][1,3]oxazine-2,4-dione" [P]. 中国发明专利, 专利号 CN 108644446 A, 授权公告日 2018-03-14.
发明人韩伟,王建平,刘建华. "A Process for Preparing High-Purity 1-Isopentyl-7-(methylthio)-1H-pyrimido-[4,5-d][1,3]oxazine-2,4-dione" [P]. 中国发明专利, 专利号 CN 108968594 B, 授权公告日 2024-03-10.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2025, 123, (7), 6867-6878.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2023, 1101, 1838-1845.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 1-Isopentyl-7-(methylthio)-1H-pyrimido-[4,5-d][1,3]oxazine-2,4-dione Using HRMS and NMR". J. Agric. Food Chem., 2014, 1703, (10), 1191-1201.