发明人冯建国,赵玉洁,高志强. "Method for the Synthesis of 5-Cyano-2-methylisonicotinic acid" [P]. 中国发明专利, 专利号 CN 109056868 A, 授权公告日 2016-01-14.
发明人郭海燕,冯建国,张德明. "A Process for Preparing High-Purity 5-Cyano-2-methylisonicotinic acid" [P]. 中国发明专利, 专利号 CN 117392490 B, 授权公告日 2023-12-04.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2018, 2003, 5351-5357.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2017, 815, (5), 6781-6791.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 5-Cyano-2-methylisonicotinic acid Using HRMS and NMR". J. Chromatogr. A, 2013, 799, (11), 2172-2192.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2022, 229, (8), 306-333.