Extraction of alkaloids from opium

Details Extraction of alkaloids from opium Extraction of alkaloids from opium

2005-05-06

2009-02-24

Andres, Janet L. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C514S282000

Reexamination Certificate

active

07495098

ABSTRACT:
A method for extracting at least one alkaloid from opium that includes dissolving opium in a solvent, heating the dissolved opium solution, cooling the dissolved opium solution, adjusting the pH of the dissolved opium solution with at least one first weak acid, filtering the dissolved opium solution to recover a filtrate; and then separating and purifying at least one alkaloid in the filtrate. Preferably, this includes an additional step of chilling the opium solution after adjusting the pH of the dissolved opium solution with at least one first acid. The preferred method for separating and purifying at least one alkaloid in the filtrate includes utilizing preparative liquid chromatography, however, solvent extraction and filtration can also be utilized.

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Heumann et al., “The manufacture of alkaloids from opium”, Bulletin on Narcotics, 1957, vol. 9, No. 2, pp. 34-40, XP002345736.

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