发明人赵玉洁,孙丽萍,杨光. "Method for the Synthesis of 4-Hydroxy-6-oxo-1-(m-tolyl)-1,6-dihydropyridazine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112697993 B, 授权公告日 2018-07-20.
发明人徐明华,胡光,朱建伟. "A Process for Preparing High-Purity 4-Hydroxy-6-oxo-1-(m-tolyl)-1,6-dihydropyridazine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116718436 B, 授权公告日 2025-05-06.
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, 2023, 2355, (10), 9386-9399.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2017, 540, (2), 299-302.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Hydroxy-6-oxo-1-(m-tolyl)-1,6-dihydropyridazine-3-carboxylic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2014, 2246, (9), 5356-5363.