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2 139 710

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IPC

(21) (22)

Application

98108804/14, 1998-05-05

(24)

Start date

1998-05-05

(22)

Actual filing date

1998-05-05

(45)

Published

1999-10-20

(72)

Inventor

Karelina O.A.

(73)

Holder

Tomskij Nii. Kurortologii I Fizioterapii Mz Rf

METHOD OF PREPARING VITAMIN E FROM HEXANE FRACTION OF NATURAL SAPROPEL Russian patent published in 1999 - IPC

Abstract RU 2139710 C1

FIELD: pharmaceutical chemistry. SUBSTANCE: water- soluble substances are isolated from native sapropel by successive extraction with 96% ethanol and hexane (40-45 min) followed by centrifugation at 1600-2000 rpm for 8-10 min. According to invention, hexane extract is concentrated and successively chromatographed in hexane and hexane-ethylacetate (37:3). EFFECT: accelerated process and increased yield. 2 ex

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RU 2 139 710 C1

Authors

Karelina O.A.

Dates

1999-10-20—Published

1998-05-05—Filed

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