Mueller T C, Nielsen H, Schröder R. "一种的合成方法" [P]. European Patent, EP 3690754 A1, 2021-12-22.
Hughes D C, Kumar R, Thompson G K. "Method for the Synthesis of 4-Methoxy-1-phenyl-1H-pyrazole-3-carboxylic acid" [P]. US Patent, US 9365394 B2, 2021-02-15.
Roberts E F, Kumar R, Schröder R. "A Process for Preparing High-Purity 4-Methoxy-1-phenyl-1H-pyrazole-3-carboxylic acid" [P]. US Patent, US 10459695 B2, 2017-04-08.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2018, 850, (9), 921-946.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2014, 893, (3), 6876-6896.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methoxy-1-phenyl-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2011, 1149, (6), 6542-6549.