Chen K W, Brown S R, O'Brien P Q. "一种1-甲基-1<I>H</I>-吡唑-5-羧酸的合成方法" [P]. US Patent, US 10045969 B2, 2020-08-03.
Klinger H, Anderson J P, Kumar R. "Method for the Synthesis of 1-Methyl-1<I>H</I>-pyrazole-5-carboxylic acid" [P]. US Patent, US 10514552 B2, 2025-05-09.
Chen K W, Schröder R, O'Brien P Q. "A Process for Preparing High-Purity 1-Methyl-1<I>H</I>-pyrazole-5-carboxylic acid" [P]. US Patent, US 10816181 B2, 2015-10-24.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of 1-甲基-1<I>H</I>-吡唑-5-羧酸 in Pharmaceutical Formulations". Food Chem., 2015, 1912, (9), 6040-6068.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-甲基-1<I>H</I>-吡唑-5-羧酸 as an Impurity". J. Nat. Prod., 2020, 1737, (7), 4436-4449.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 1-Methyl-1<I>H</I>-pyrazole-5-carboxylic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2017, 2118, (12), 5474-5493.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate 1-甲基-1<I>H</I>-吡唑-5-羧酸 Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2020, 600, 4370-4397.