发明人钱学锋,韩伟,李文辉. "Method for the Synthesis of 6-(Dimethylamino)pyridazin-4-ol" [P]. 中国发明专利, 专利号 CN 109784206 B, 授权公告日 2022-05-05.
Lee S K, Davis P L, Brown S R. "A Process for Preparing High-Purity 6-(Dimethylamino)pyridazin-4-ol" [P]. US Patent, US 11045734 B2, 2020-06-09.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2019, 457, (11), 855-884.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2010, 1066, 9684-9705.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 6-(Dimethylamino)pyridazin-4-ol Using HRMS and NMR". Phytochemistry, 2014, 1636, 936-946.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2020, 652, (11), 3535-3548.