发明人孙丽萍,韩伟,黄志刚. "Method for the Synthesis of 3-Ethyl-5-(pyrrolidin-2-yl)-1,2,4-oxadiazole" [P]. 中国发明专利, 专利号 CN 117827376 A, 授权公告日 2021-12-04.
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