Methyl sulfate ester is a chemical compound formed by the reaction of sulfuric acid with methanol. It is commonly used in organic synthesis and as a reagent in various chemical reactions. This compound is known for its ability to act as a methylating agent, which means it can add methyl groups to other molecules, altering their chemical properties. In industrial applications, methyl sulfate ester is utilized in the production of surfactants, pharmaceuticals, and agrochemicals. However, it is important to handle this compound with care, as it can be toxic and harmful to the environment. Proper safety measures should be taken when working with methyl sulfate ester.