发明人周伟,朱建伟,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110103773 A, 授权公告日 2024-06-28.
发明人唐晓军,马晓峰,何建平. "Method for the Synthesis of 2-Amino-4-isopropyl-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 110246985 B, 授权公告日 2020-08-06.
发明人朱建伟,陈志强,孙丽萍. "A Process for Preparing High-Purity 2-Amino-4-isopropyl-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 114493314 A, 授权公告日 2015-03-15.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2024, 931, (8), 1445-1457.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2025, 2076, 6002-6027.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 2-Amino-4-isopropyl-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile Using HRMS and NMR". Talanta, 2015, 311, (1), 6035-6061.