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RRR-α-TOCOPHEROL

RRR-α-Tocopherolum

C29H50O2

Mr 430.7

DEFINITION

(2R)-2,5,7,8-Tetramethyl-2-[(4R,8R)-4,8,12-trimethyltridecyl]-3,4-dihydro-2H-1-benzopyran-6-ol.

Content: 94.5 per cent to 102.0 per cent.

Related substances. Gas chromatography (2.2.28): use the normalisation procedure.

Internal standard solution. Dissolve 1.0 g of squalane R in cyclohexane R and dilute to 100.0 ml with the same solvent.

Test solution (a). Dissolve 0.100 g of the substance to be examined in 10.0 ml of the internal standard solution.

Test solution (b). Dissolve 0.100 g of the substance to be examined in 10 ml of cyclohexane R.

Reference solution (a). Dissolve 0.100 g of α-tocopherol CRS in 10.0 ml of the internal standard solution.

Reference solution (b). Dissolve 10 mg of α-tocopherol R and 10 mg of α-tocopheryl acetate R in cyclohexane R and dilute to 100.0 ml with the same solvent.

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