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发明人赵玉洁,杨光,钱学锋. "A Process for Preparing High-Purity 5-(Ethylsulfonyl)-4-methyl-2-thioxo-1,2-dihydropyridine-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 113187268 B, 授权公告日 2016-05-09.
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