Color-stable, low impurity tocopherol compositions and...

Details Color-stable, low impurity tocopherol compositions and... Color-stable, low impurity tocopherol compositions and...

2006-11-21

2006-11-21

Solola, Taofiq (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07138532

ABSTRACT:
Processes for preparing color-stable, low-impurity tocopherol compositions are described, wherein the processes comprise: (a) providing a protecting group-substituted tocopherol compound, for example an acetate of a natural-source tocopherol compound; (b) purifying the protecting group-substituted tocopherol compound, for example through crystallization; and (c) solvolyzing the purified compound to form free tocopherol. Also described are the tocopherol compositions prepared thereby.

REFERENCES:
patent: 5670668 (1997-09-01), Hyatt
patent: 6414166 (2002-07-01), Lee
Baxter, et al., Natural α-, β- and γ-Tocopherols and Certain Esters of Physiological Interest, JACS, vol. 65, (May 1943), pp. 918-924.

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