METHANE SULPHONYL CHLORIDE

Methane sulfonyl chloride (MSC) is a versatile, responsive, mesyl group (CH3SO2) chemical for substitution in a number of reactions. A pale yellow corrosive liquid. More dense than water and insoluble in water. Very toxic by ingestion, inhalation. Used as a protecting group for alcohols to form mesyl esters which are intermediates in substitution reactions, elimination reactions, reductions, and rearrangement reactions.