Sodium methanesulfonate is utilized as a reagent and intermediate in organic synthesis, especially in pharmaceutical and agrochemical industries. It facilitates the introduction of the methanesulfonate group to form mesylate esters, which serve as excellent leaving groups in nucleophilic substitution reactions, providing mild conditions with good selectivity and yield. It is also used in electroplating baths as a conductive salt to enhance deposit uniformity and brightness. Furthermore, it acts as a precursor for sulfonate-based surfactants and catalysts, owing to its favorable reactivity and solubility. Its stability in aqueous and polar organic solvents makes it ideal for large-scale industrial applications.