Methylsulfonylmethane (MSM), also known as dimethyl sulfone, is an organosulfur compound with the formula (CH3)2SO2. This colorless solid features the sulfone functional group and is considered relatively inert chemically. It occurs naturally in some primitive plants and is present in small amounts in many foods and beverages and it is marketed as a dietary supplement, although its benefits are disputed.
MSM is promoted as a natural source of sulfur by the supplement and health food industry, suggesting that people are deficient in sulfur intake. However, protein in the diet is an abundant source of sulfur, which is contained in the amino acids methionine and cysteine. MSM is sold as a dietary supplement that is marketed with a variety of claims and is commonly used (often in combination with glucosamine and/or chondroitin) for helping to treat or prevent osteoarthritis. U.S. Retail sales of MSM as a single ingredient in dietary supplements amounted to $325 million in 2008. The biochemical effects of supplemental methylsulfonylmethane are poorly understood. Some researchers have suggested that MSM has anti-inflammatory effects. Any health effects of dimethyl sulfoxide (DMSO) may be mediated, at least in part, by MSM. Stanley W. Jacob, M.D., of the Oregon Health and Science University, claims to have used MSM to treat over 18,000 patients with a variety of ailments. MSM is the primary metabolite of DMSO in humans, and is also a metabolite of sulfur-containing amino acids.
|
ITEMS |
STANDARD |
RESULTS |
|
Appearance |
White crystalline powder |
Conform |
|
Melting point |
108-110℃ |
108-110℃ |
|
Assay(GC) |
99.9%min |
99.96% |
|
Moisture Contain |
0.5%max |
0.29% |
|
E.Coli |
Negative |
Conform |
|
Heavy metals |
3ppm max |
Conform |
|
Salmonella |
Negative |
Conform |
|
