Nowak P, Martínez F, Jørgensen K. "一种3-(Tetrahydro-2H-pyran-4-yl)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid的合成方法" [P]. European Patent, EP 3320718 A1, 2023-06-26.
发明人刘建华,徐明华,冯建国. "Method for the Synthesis of 3-(Tetrahydro-2H-pyran-4-yl)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115813531 A, 授权公告日 2021-11-02.
发明人钱学锋,郭海燕,罗永刚. "A Process for Preparing High-Purity 3-(Tetrahydro-2H-pyran-4-yl)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117368497 A, 授权公告日 2024-11-07.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 3-(Tetrahydro-2H-pyran-4-yl)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid in Pharmaceutical Formulations". Chemosphere, 2011, 871, (11), 5970-5975.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of 3-(Tetrahydro-2H-pyran-4-yl)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid as an Impurity". J. Sep. Sci., 2015, 1256, (6), 4669-4672.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 3-(Tetrahydro-2H-pyran-4-yl)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid Using HRMS and NMR". Sci. Total Environ., 2022, 1873, 2145-2169.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate 3-(Tetrahydro-2H-pyran-4-yl)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2020, 1055, 3422-3425.