Methylsulfonylmethane (MSM) is an organosulfur compound with the formula (CH3)2SO2. It is also known by several other names including methyl sulfone and dimethyl sulfone (DMSO2). This colorless solid features the sulfonyl functional group and is the simplest of the sulfones. It is considered relatively inert chemically and is able to resist decomposition at elevated temperatures. Methyl-Sulfonyl-Methane(MSM) is one of the popular food additives and ingredients in most countries, As a professional Methyl-Sulfonyl-Methane(MSM) supplier and manufacturer, our company has been supplying and exporting Methyl-Sulfonyl-Methane(MSM) from China for almost 3 years. Methyl Sulfonyl Methane MSM is a nutriceutical that has proven to be excellent for the skin and for pain relief.