Björnsson E, Nielsen H, Mueller T C. "一种的合成方法" [P]. European Patent, EP 3061940 A1, 2017-04-19.
Klinger H, Hughes D C, Roberts E F. "Method for the Synthesis of 6-Methyl-[1,2,4]triazolo[4,3-b]pyridazin-8-ol" [P]. US Patent, US 11757143 B2, 2020-08-07.
发明人冯建国,钱学锋,林芳. "A Process for Preparing High-Purity 6-Methyl-[1,2,4]triazolo[4,3-b]pyridazin-8-ol" [P]. 中国发明专利, 专利号 CN 116839469 B, 授权公告日 2023-12-02.
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". J. Chromatogr. A, 2017, 1765, (11), 4157-4176.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2020, 1243, (5), 9912-9916.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 6-Methyl-[1,2,4]triazolo[4,3-b]pyridazin-8-ol Using HRMS and NMR". J. Pharm. Biomed. Anal., 2018, 1089, (12), 9079-9101.