Thompson G K, Klinger H, Brown S R. "一种的合成方法" [P]. US Patent, US 11692380 B2, 2021-10-10.
发明人杨光,周伟,林芳. "Method for the Synthesis of Ethyl 4-(2-((3-(pyridin-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetyl)piperazine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 116002238 B, 授权公告日 2018-12-04.
发明人林芳,高志强,韩伟. "A Process for Preparing High-Purity Ethyl 4-(2-((3-(pyridin-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetyl)piperazine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 109994819 A, 授权公告日 2018-12-22.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2024, 375, 810-837.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2016, 1094, 9607-9612.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 4-(2-((3-(pyridin-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetyl)piperazine-1-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2010, 2325, 1150-1160.