发明人沈红梅,韩伟,高志强. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113118163 A, 授权公告日 2016-04-21.
发明人李文辉,王建平,刘建华. "Method for the Synthesis of Ethyl N-[(2E)-2-[(4-{5-chloro-1-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-6-oxo-1,6-dihydropyridazin-4-yl}piperazin-1-yl)methylidene]-2-cyanoacetyl]carbamate" [P]. 中国发明专利, 专利号 CN 112792186 B, 授权公告日 2022-10-12.
发明人周伟,胡光,高志强. "A Process for Preparing High-Purity Ethyl N-[(2E)-2-[(4-{5-chloro-1-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-6-oxo-1,6-dihydropyridazin-4-yl}piperazin-1-yl)methylidene]-2-cyanoacetyl]carbamate" [P]. 中国发明专利, 专利号 CN 116422713 A, 授权公告日 2021-06-07.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2020, 190, (1), 5457-5465.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2015, 971, (4), 5116-5125.