Method of producing dry thioctic acid

Details Method of producing dry thioctic acid Method of producing dry thioctic acid

1998-06-23

1999-11-09

Kight, John

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D33324

Patent

active

059817674

ABSTRACT:
The present invention is relative to a method of producing dry thioctic acid in which a raw material in which concentrated thioctic acid is present is treated with liquid or supercritical CO.sub.2, thus yielding thioctic acid with low residual solvent contents in a simple industrial method.

REFERENCES:
Schneider, "Physikalisch-chemische Grundlagen der Extraktion mit uberkritischen Gasen", Angew. Chem. 90, 1978, pp. 762-774.

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