发明人赵玉洁,高志强,胡光. "Method for the Synthesis of 3-(Difluoromethoxy)-5-(methylthio)thiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114308270 B, 授权公告日 2023-10-11.
Klinger H, Yamamoto T, Mueller T. "A Process for Preparing High-Purity 3-(Difluoromethoxy)-5-(methylthio)thiophene-2-carboxylic acid" [P]. US Patent, US 9183748 B2, 2022-04-14.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2019, 116, (3), 1210-1237.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2014, 1626, (4), 1019-1044.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 3-(Difluoromethoxy)-5-(methylthio)thiophene-2-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2010, 102, 1788-1815.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2024, 1014, (5), 5283-5306.