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发明人赵玉洁,林芳,孙丽萍. "A Process for Preparing High-Purity Ethyl 5-((5-methyl-1,3,4-thiadiazol-2-yl)carbamoyl)-1,3,4-thiadiazole-2-carboxylate" [P]. 中国发明专利, 专利号 CN 113574690 A, 授权公告日 2016-02-09.
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