Mueller T, Lee S K, Schröder R. "一种的合成方法" [P]. US Patent, US 11443185 B2, 2016-09-27.
Lefèvre J P, Björnsson E, Nowak P. "Method for the Synthesis of Ethyl 3-(4-nitrophenyl)-1,2,4-oxadiazole-5-carboxylate" [P]. European Patent, EP 3367616 A1, 2025-10-04.
发明人何建平,陈志强,郑宇鹏. "A Process for Preparing High-Purity Ethyl 3-(4-nitrophenyl)-1,2,4-oxadiazole-5-carboxylate" [P]. 中国发明专利, 专利号 CN 117546473 A, 授权公告日 2016-01-14.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2017, 112, (4), 2047-2053.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2018, 1417, 1547-1554.