CAS 1464-42-2: Selenomethionine

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DL-Selenomethionine (SeMet) is a selenium analog of methionine, substituting sulfur with selenium, and can replace methionine in proteins.

Selenomethionine is an amino acid that is used as a dietary supplement and has been shown to have a variety of biological functions. It is a component of the enzyme glutathione peroxidase, which catalyzes the decomposition of hydrogen peroxide into water and oxygen. Selenomethionine is also used in the synthesis of selenoproteins, which are proteins that contain selenium. Selenoproteins are involved in several biological functions, such as thyroid hormone metabolism and protection against oxidative stress. Selenomethionine may be toxic at high doses and should not be taken by pregnant women or children.

Applications Selenomethionine is used in the anticancer/antitumor drug combinations in an effort to minimize tumor sizes and improve survivability of breast cancer patients. Also used in the treatment of autoimmune thyroiditis, acting through eurothyroidism it reduces thyroid stimulating hormone levels (TSH). Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package References Van R. et al.: Canc. Inv., 31, 505 (2013); Nordio, M. et al.: J. Thyr. Res., 424163, 1 (2013);

Selenomethionine