Kumar R, Roberts E F, Thompson G K. "一种的合成方法" [P]. US Patent, US 11186969 B2, 2021-10-25.
发明人韩伟,杨光,高志强. "Method for the Synthesis of 5-Amino-3,4-dimethylthieno[2,3-c]pyridazine-6-carbonitrile" [P]. 中国发明专利, 专利号 CN 112579111 B, 授权公告日 2020-12-08.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2014, 1339, 1481-1495.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2019, 2266, 3134-3158.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 5-Amino-3,4-dimethylthieno[2,3-c]pyridazine-6-carbonitrile Using HRMS and NMR". Sci. Total Environ., 2016, 2393, (4), 2836-2844.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2019, 1851, (5), 5403-5433.