Park J H, Hughes D C, Lee S K. "一种的合成方法" [P]. US Patent, US 10366411 B2, 2019-12-07.
Kowalski A, Nowak P, Mueller T C. "Method for the Synthesis of 3-((3,4-Dimethoxyphenyl)carbamoyl)pyrazine-2-carboxylic acid" [P]. European Patent, EP 3361869 A1, 2024-01-20.
发明人郭海燕,胡光,韩伟. "A Process for Preparing High-Purity 3-((3,4-Dimethoxyphenyl)carbamoyl)pyrazine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113515377 B, 授权公告日 2025-08-23.
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". Phytochemistry, 2014, 330, 4435-4450.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2019, 126, 5865-5880.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 3-((3,4-Dimethoxyphenyl)carbamoyl)pyrazine-2-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2021, 204, 255-275.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2014, 249, 2474-2490.