Williams B T, Kumar R, Thompson G K. "一种的合成方法" [P]. US Patent, US 10478358 B2, 2017-12-18.
Johnson M A, Patel M V, Park J H. "Method for the Synthesis of 5-(pyrazin-2-yl)-1,3,4-oxadiazole-2-thiol" [P]. US Patent, US 9594652 B2, 2023-05-11.
发明人李文辉,韩伟,黄志刚. "A Process for Preparing High-Purity 5-(pyrazin-2-yl)-1,3,4-oxadiazole-2-thiol" [P]. 中国发明专利, 专利号 CN 111448065 A, 授权公告日 2023-12-24.
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., 2020, 339, (11), 2750-2759.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2021, 1487, (5), 3788-3812.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 5-(pyrazin-2-yl)-1,3,4-oxadiazole-2-thiol Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2022, 219, 7577-7606.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2021, 2406, 1773-1798.