S-Methyl-isothiourea sulfate was oxidized by hydrogen peroxide to give methylsulfonyl chloride in 70% yield in aqueous hydrochloric acid solution.The product was characterized by 1HNNR and IR.

• 在盐酸介质中，利用双氧水氧化S-甲基异硫脲盐，合成了甲基磺酰氯，收率70%25。