Brown S R, Patel M V, Lee S K. "一种的合成方法" [P]. US Patent, US 9948754 B2, 2023-09-22.
Nielsen H, Lefèvre J P, Kowalski A. "Method for the Synthesis of Ethyl Ester 4-amino-5-propyl-1H-Pyrazole-3-carboxylic acid" [P]. European Patent, EP 3164294 A1, 2018-12-03.
Stevens L M, Thompson G K, Patel M V. "A Process for Preparing High-Purity Ethyl Ester 4-amino-5-propyl-1H-Pyrazole-3-carboxylic acid" [P]. US Patent, US 11420205 B2, 2016-10-11.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2024, 844, (3), 1253-1256.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2020, 2465, 6314-6318.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl Ester 4-amino-5-propyl-1H-Pyrazole-3-carboxylic acid Using HRMS and NMR". Anal. Methods, 2024, 412, (6), 5251-5281.