Patel M V, Hughes D C, Lee S K. "Method for the Synthesis of 6-Methyl-4-oxo-1,4-dihydropyridazine-3-carboxylic acid" [P]. US Patent, US 11911858 B2, 2017-03-18.
发明人唐晓军,郑宇鹏,黄志刚. "A Process for Preparing High-Purity 6-Methyl-4-oxo-1,4-dihydropyridazine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111557322 B, 授权公告日 2019-08-22.
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". Anal. Chem., 2021, 1773, (11), 9721-9730.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2012, 880, (10), 7727-7757.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 6-Methyl-4-oxo-1,4-dihydropyridazine-3-carboxylic acid Using HRMS and NMR". Phytochemistry, 2017, 731, 9367-9387.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2022, 2286, 9769-9783.