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TocobestTM
Vitamin E Homologues
Natural & synthetic VE
Bioactivity
TocobestTM VE series
Absorption& transportation
Function
Dosage
Health risk of too much VE
The VE Controversy
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Vitamin E Homologues |
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Vitamin E refers to a family of eight molecules having a chromanol ring (chroman ring with an alcoholic hydroxyl group) and a 12-carbon aliphatic side chain containing two methyl groups in the middle and two more methyl groups at the end. For the four tocopherols the side chain is saturated, whereas for the four tocotrienols the side chain contains three double-bonds, all of which adjoin a methyl group.
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Position of methyl groups
on aromatic ring |
Tocopherol structure(I) |
Tocotrienol structure(II) |
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5,7,8 |
alpha-Tocopherol 59-02-9 |
alpha-Tocotrienol 1721-51-3 |
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5,8 |
beta-Tocopherol 148-03-8 |
beta-Tocotrienol 490-23-3 |
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7,8 |
gamma-Tocopherol 54-28-4 |
gamma-Tocotrienol 14101-61-2 |
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8 |
delta-Tocopherol 119-13-1 |
delta-Tocotrienol 25612-59-3 |
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Tocopherols |
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Tocotrienols |
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The alpha form has three methyl groups, the beta & gamma forms have two methyl groups and the delta for has only one methyl group. | |
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