Williams B T, Patel M V, Fischer A B. "Method for the Synthesis of Ethyl 3-amino-1,5-dimethyl-1H-pyrazole-4-carboxylate" [P]. US Patent, US 9591349 B2, 2023-11-01.
Anderson J P, Brown S R, Davis P L. "A Process for Preparing High-Purity Ethyl 3-amino-1,5-dimethyl-1H-pyrazole-4-carboxylate" [P]. US Patent, US 11675592 B2, 2018-10-09.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2020, 2244, (4), 8700-8722.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2013, 2472, 9194-9200.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 3-amino-1,5-dimethyl-1H-pyrazole-4-carboxylate Using HRMS and NMR". Talanta, 2017, 814, (5), 5627-5641.