Selenium SeLECT®: A bioavailable and safe form of selenium supplementation

Chemical structure



CAS : 3211-76-5
Synonym : (S)-(+)-2-Amino-4(methylseleno)-butanoic acid
Specific rotation : Between +17.0° and +19.5°
(Test solution: 10 mg per ml, in 1 N HCL)
Sabinsa Corporation offers manufacturers two grades of Selenium SeLECT®
  • Selenium SeLECT® Pure – contains a minimum of 40% elemental selenium
  • Selenium SeLECT® 5000 – A triturated product with dicalcium phosphate, which contains 5,000 μg per gram (0.5% elemental selenium)
  • It is important to recognize that “chelates” and “organically bound” forms of selenium are not similar to Sabinsa’s Selenium SeLECT® as both these forms release inorganic selenium into the body. Selenium SeLECT®, is a unique single chemical entity containing molecularly integrated selenium in place of sulfur in the molecule of the essential amino acid, methionine. Selenium SeLECT® is directly incorporated into the body proteins by metabolic pathways similar to those for methionine
Importance of the L(+) chiral configuration
  • Selenium SeLECT® is recognized for its enhanced safety and bioavailability compared to traditional ‘dry blended’ selenium and methionine products. The form of organically bound selenium found in Selenium SeLECT® has been highlighted for its significant role in supporting the body’s detoxification processes. The presence of selenomethionine in the L-(+) form is crucial for its effectiveness, mirroring the natural occurrence of amino acids in living cells predominantly in the L-(+) form. Sabinsa Corporation has developed precise analytical methodologies to ensure the identification of the L-(+) form of selenomethionine, distinguishing Selenium SeLECT® from other products that may simply blend inorganic selenium salts with methionine. This attention to detail underscores the commitment to providing high-quality, bioavailable selenium supplementation
  • Sabinsa’s Selenium SeLECT® is the preferred selenium supplementation due to its inherent safety and its scientific recognition in providing superior bioavailability