L-selenomethionine

L-Selenomethionine (CAS 3211-76-5) is the bioavailable, organically bound form of selenium. Also known as Seleno-L-methionine.

Where is L-selenomethionine used?

• Dietary supplements and nutraceuticals: primary active ingredient in selenium fortification products
• Functional food fortification: superior absorption compared to inorganic selenium salts
• Antioxidant support formulations
• Pharmaceuticals: selenium source in micronutrient preparations, including tablets, capsules and infusion solutions where precise dosing is critical
• Cosmetics and personal care: antioxidant and moisturizing agent in anti-aging creams and serums
• Biotechnology and cell culture: selenium supplement in growth media for protein expression studies

Good to know: USP and Ph. Eur. grades are commonly sourced for regulated applications.

Commercial specifications

• Bulk quantities for industrial formulators; smaller research quantities for biotechnology and laboratory use