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- Alpha-Tocopherol abstract "α-Tocopherol is a type of tocopherol or vitamin E. It has E number "E307".α-Tocopherol is a form of vitamin E that is preferentially absorbed and accumulated in humans. The measurement of "vitamin E" activity in international units (IU) was based on fertility enhancement by the prevention of spontaneous abortions in pregnant rats relative to alpha-tocopherol. There are three stereocenters in alpha-tocopherol, so this is a chiral molecule. The eight stereoisomers of alpha-tocopherol differ in the arrangement of groups around these stereocenters. In the image of RRR-alpha-tocopherol, all three stereocenters are in the R form. However, if the middle of the three stereocenters were changed (so the hydrogen was now pointing down and the methyl group pointing up), this would become the structure of RSR-alpha-tocopherol. RSR-alpha-tocopherol and RRR-alpha-tocopherol are diastereomers of each other. These stereoisomers can also be named in an alternative older nomenclature, where the stereocenters are either in the d or l form.1 IU of tocopherol is defined as ⅔ milligrams of RRR-alpha-tocopherol (formerly named d-alpha-tocopherol or sometimes ddd-alpha-tocopherol). 1 IU is also defined as 1 milligram of an equal mix of the eight stereoisomers, which is a racemic mixture called all-rac-alpha-tocopheryl acetate. This mix of stereoisomers is often called dl-alpha-tocopheryl acetate, even though it is more precisely dl,dl,dl-alpha-tocopheryl acetate). However, 1 IU of this racemic mixture is not now considered equivalent to 1 IU of natural (RRR) α-tocopherol, and the Institute of Medicine and the USDA now convert IU's of the racemic mixture to milligrams of equivalent RRR using 1 IU racemic mixture = 0.45 "milligrams α-tocopherol".".
- Alpha-Tocopherol iupacName "(2R)-2,5,7,8-Tetramethyl-2-[(4R,8R'')-(4,8,12-trimethyltridecyl)]-6-chromanol".
- Alpha-Tocopherol thumbnail Tocopherol,_alpha-.svg?width=300.
- Alpha-Tocopherol wikiPageID "5281357".
- Alpha-Tocopherol wikiPageRevisionID "541680770".
- Alpha-Tocopherol hasPhotoCollection Alpha-Tocopherol.
- Alpha-Tocopherol imagefile "Sample of alpha-tocopherol.jpg".
- Alpha-Tocopherol imagefile "Tocopherol, alpha-.svg".
- Alpha-Tocopherol imagesize "300".
- Alpha-Tocopherol iupacname "-2578".
- Alpha-Tocopherol name "α-Tocopherol".
- Alpha-Tocopherol name "α-Tocopherol".
- Alpha-Tocopherol verifiedrevid "443660118".
- Alpha-Tocopherol watchedfields "changed".
- Alpha-Tocopherol subject Category:Vitamins.
- Alpha-Tocopherol type Food100021265.
- Alpha-Tocopherol type Matter100020827.
- Alpha-Tocopherol type Nutriment107570720.
- Alpha-Tocopherol type PhysicalEntity100001930.
- Alpha-Tocopherol type Substance100020090.
- Alpha-Tocopherol type Vitamin115089258.
- Alpha-Tocopherol type Vitamins.
- Alpha-Tocopherol type ChemicalCompound.
- Alpha-Tocopherol type ChemicalSubstance.
- Alpha-Tocopherol type ChemicalSubstanceType.
- Alpha-Tocopherol type ChemicalObject.
- Alpha-Tocopherol type Thing.
- Alpha-Tocopherol comment "α-Tocopherol is a type of tocopherol or vitamin E. It has E number "E307".α-Tocopherol is a form of vitamin E that is preferentially absorbed and accumulated in humans. The measurement of "vitamin E" activity in international units (IU) was based on fertility enhancement by the prevention of spontaneous abortions in pregnant rats relative to alpha-tocopherol. There are three stereocenters in alpha-tocopherol, so this is a chiral molecule.".
- Alpha-Tocopherol label "Alpha-Tocopherol".
- Alpha-Tocopherol label "Alpha-tocophérol".
- Alpha-Tocopherol label "Α-Tocoferol".
- Alpha-Tocopherol sameAs Α-Tocoferol.
- Alpha-Tocopherol sameAs Alpha-tocophérol.
- Alpha-Tocopherol sameAs m.04kl74p.
- Alpha-Tocopherol sameAs Q158348.
- Alpha-Tocopherol sameAs Q158348.
- Alpha-Tocopherol sameAs Alpha-Tocopherol.
- Alpha-Tocopherol wasDerivedFrom Alpha-Tocopherol?oldid=541680770.
- Alpha-Tocopherol depiction Tocopherol,_alpha-.svg.
- Alpha-Tocopherol isPrimaryTopicOf Alpha-Tocopherol.
- Alpha-Tocopherol name "α-Tocopherol".
- Alpha-Tocopherol thumbnail Tocopherol.