发明人唐晓军,郑宇鹏,孙丽萍. "Method for the Synthesis of Ethyl 5-methyl-2-oxo-1,3,4-oxadiazole-3(2H)-carboxylate" [P]. 中国发明专利, 专利号 CN 108475907 A, 授权公告日 2022-01-15.
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