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dimethyl sulphate
Diethyl sulfate is a highly toxic and likely carcinogenic(1) chemical compound with formula (C2H5)2SO4. It occurs as a colorless liquid with a peppermint odor.Diethyl sulfate is used as an alkylating agent to prepare ethyl derivatives of phenols, amines, and thiols.Dimethyl sulfate is a chemical compound with formula (CH3O)2SO2. As the dimethyl ester of sulfuric acid, its formula is often written as (CH3)2SO4 or even Me2SO4, where CH3 or Me is methyl. Me2SO4 is mainly used as a methylating agent in organic synthesis.