Yamamoto T, Anderson J P, Stevens L M. "Method for the Synthesis of 3-(((1,5-Dimethyl-1H-pyrazol-4-yl)methyl)(methyl)carbamoyl)-1-methyl-1H-pyrazole-4-carboxylic acid" [P]. US Patent, US 10183191 B2, 2016-03-07.
发明人胡光,沈红梅,刘建华. "A Process for Preparing High-Purity 3-(((1,5-Dimethyl-1H-pyrazol-4-yl)methyl)(methyl)carbamoyl)-1-methyl-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110051790 A, 授权公告日 2021-06-24.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2010, 148, (3), 3931-3958.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2011, 2444, (11), 4514-4539.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 3-(((1,5-Dimethyl-1H-pyrazol-4-yl)methyl)(methyl)carbamoyl)-1-methyl-1H-pyrazole-4-carboxylic acid Using HRMS and NMR". Phytochemistry, 2015, 1842, (1), 5446-5459.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2014, 517, (3), 6968-6984.