67-68-5
二甲基亚砜
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640-61-9
N-甲基对甲苯磺酰胺
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1099-76-9
N,4-dimethyl-N-[[methyl-(4-methylphenyl)sulfonylamino]methyl]benzenesulfonamide
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甲醛
23114-01-4
N,4-dimethyl-N-nitrobenzenesulfonamide