发明人郑宇鹏,张德明,郭海燕. "Method for the Synthesis of Ethyl 3-pyridin-3-yl-[1,2,4]oxadiazole-5-carboxylate" [P]. 中国发明专利, 专利号 CN 109630423 A, 授权公告日 2019-04-26.
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