Williams B T, Roberts E F, Lee S K. "Method for the Synthesis of 3-Amino-N-(3-hydroxyphenyl)-4,6-dimethylthieno[2,3-b]pyridine-2-carboxamide" [P]. US Patent, US 11570618 B2, 2024-02-23.
Kowalski A, Rossi M, Björnsson E. "A Process for Preparing High-Purity 3-Amino-N-(3-hydroxyphenyl)-4,6-dimethylthieno[2,3-b]pyridine-2-carboxamide" [P]. European Patent, EP 3198388 A1, 2022-04-05.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2018, 1717, (8), 9362-9387.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2015, 2089, 9649-9666.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 3-Amino-N-(3-hydroxyphenyl)-4,6-dimethylthieno[2,3-b]pyridine-2-carboxamide Using HRMS and NMR". J. Chromatogr. A, 2014, 1856, (6), 6313-6343.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2012, 1156, (7), 8263-8286.