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发明人刘建华,孙丽萍,李文辉. "Method for the Synthesis of 5-(2-Chloro-5-nitrophenyl)-3-(pyridin-2-yl)-1,2,4-oxadiazole" [P]. 中国发明专利, 专利号 CN 110261190 B, 授权公告日 2018-09-23.
发明人黄志刚,张德明,杨光. "A Process for Preparing High-Purity 5-(2-Chloro-5-nitrophenyl)-3-(pyridin-2-yl)-1,2,4-oxadiazole" [P]. 中国发明专利, 专利号 CN 111356475 A, 授权公告日 2022-09-13.
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