Chen K W, Park J H, Brown S R. "Method for the Synthesis of ethyl 5-formyl-1-phenyl-1H-pyrazole-4-carboxylate" [P]. US Patent, US 11745576 B2, 2025-03-14.
发明人罗永刚,高志强,沈红梅. "A Process for Preparing High-Purity ethyl 5-formyl-1-phenyl-1H-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 113186012 A, 授权公告日 2025-09-16.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of ethyl 5-formyl-1-phenyl-1H-pyrazole-4-carboxylate in Pharmaceutical Formulations". J. Sep. Sci., 2015, 2304, (11), 6860-6881.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of ethyl 5-formyl-1-phenyl-1H-pyrazole-4-carboxylate as an Impurity". Anal. Chem., 2020, 726, (2), 5529-5544.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of ethyl 5-formyl-1-phenyl-1H-pyrazole-4-carboxylate Using HRMS and NMR". Anal. Methods, 2011, 1601, 7260-7284.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate ethyl 5-formyl-1-phenyl-1H-pyrazole-4-carboxylate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2022, 887, (3), 784-799.