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发明人罗永刚,郑宇鹏,冯建国. "A Process for Preparing High-Purity 2-(5-Methyl-2-oxo-2,3-dihydro-1,3,4-oxadiazol-3-yl)ethane-1-sulfonyl chloride" [P]. 中国发明专利, 专利号 CN 109566489 A, 授权公告日 2015-02-09.
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