Roberts E F, Thompson G K, Lee S K. "Method for the Synthesis of Ethyl 5-methoxy-1,4-dimethyl-1h-pyrazole-3-carboxylate" [P]. US Patent, US 10662519 B2, 2019-03-10.
Kowalski A, Jørgensen K, Björnsson E. "A Process for Preparing High-Purity Ethyl 5-methoxy-1,4-dimethyl-1h-pyrazole-3-carboxylate" [P]. European Patent, EP 3800175 A1, 2018-12-08.
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". Sci. Total Environ., 2019, 994, 934-964.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2021, 1386, (2), 1969-1998.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5-methoxy-1,4-dimethyl-1h-pyrazole-3-carboxylate Using HRMS and NMR". Anal. Chem., 2023, 1700, (5), 1823-1835.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2016, 710, (4), 656-666.