Vit. E is sold as a racemic mixture of (+) and (-) isomers. Which is the more physiologically stirring isomer?

How does the cost of the racemic mixture compare with the price of the pure, physiologically active isomer?
Answers:
The most active form of Vitamin E, up to presently, is d-α-tocopherol., which is the (+) isomer.

I can't find exact costs of the racemic mixture / active form of vitamin E, but I would guess that the pure active isomer would be more expensive than the racemic mixture. This is so because it takes more time and shot to seperate the pure active isomer from the inactive isomer, so it makes sense that it would cost more to buy the pure busy form. A racemic mixture doesn't take as much time to make, because when you synthesize Vitamin E, it becomes a racemic mixture automatically. Hence, it take less effort to make a racemic mixture, and would be cheaper to breed. Source(s): UW pharmacy student
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