Hughes D C, Roberts E F, Williams B T. "Method for the Synthesis of Methyl 4-ethoxythiophene-2-carboxylate" [P]. US Patent, US 11800489 B2, 2025-12-18.
Klinger H, Davis P L, Anderson J P. "A Process for Preparing High-Purity Methyl 4-ethoxythiophene-2-carboxylate" [P]. US Patent, US 9540069 B2, 2019-09-26.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2025, 418, (9), 9143-9156.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2012, 1992, (7), 2681-2691.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 4-ethoxythiophene-2-carboxylate Using HRMS and NMR". J. Agric. Food Chem., 2023, 619, 6324-6329.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2018, 1685, 2933-2958.