Björnsson E, Mueller T C, Lefèvre J P. "Method for the Synthesis of 1-(2-Hydroxyethyl)-6-oxo-1,6-dihydropyridazine-3-carboxylic acid" [P]. European Patent, EP 3416223 A1, 2022-06-02.
Schröder R, Mueller T C, Nielsen H. "A Process for Preparing High-Purity 1-(2-Hydroxyethyl)-6-oxo-1,6-dihydropyridazine-3-carboxylic acid" [P]. European Patent, EP 3054386 A1, 2025-12-12.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2014, 1909, 8783-8790.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2012, 1802, (9), 7968-7990.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2-Hydroxyethyl)-6-oxo-1,6-dihydropyridazine-3-carboxylic acid Using HRMS and NMR". Anal. Methods, 2021, 1947, 7991-7998.