Product Name MSM powder Methyl Sulfonyl Methane/MSM POWDER CAS No. 67-71-0 Appearance White crystalline powder EINECS No. 200-665-9 Test Method HPLC Molecular Formula C2H6O2S Molecular Weight 94.1328 Methyl sulfonyl methane (MSM) is an organosulfur compound with the formula (CH3)2SO2. It is also known by several other names including DMSO2, methyl sulfone, and dimethyl sulfone.[1] This colorless solid features the sulfonyl functional group and is considered relatively inert chemically. It …