Schröder R, Patel M V, Anderson J P. "Method for the Synthesis of 1-[2-(dimethylamino)ethyl]-1H-pyrazole-4-carboxylic acid hydrochloride" [P]. US Patent, US 9759140 B2, 2018-12-21.
发明人胡光,孙丽萍,郑宇鹏. "A Process for Preparing High-Purity 1-[2-(dimethylamino)ethyl]-1H-pyrazole-4-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 109774892 A, 授权公告日 2020-01-05.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of 1-[2-(dimethylamino)ethyl]-1H-pyrazole-4-carboxylic acid hydrochloride in Pharmaceutical Formulations". Anal. Chem., 2014, 761, 9416-9433.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-[2-(dimethylamino)ethyl]-1H-pyrazole-4-carboxylic acid hydrochloride as an Impurity". Rapid Commun. Mass Spectrom., 2023, 1237, 5156-5170.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 1-[2-(dimethylamino)ethyl]-1H-pyrazole-4-carboxylic acid hydrochloride Using HRMS and NMR". Biomed. Chromatogr., 2022, 2198, 1812-1828.