Chemical analysis (was: update on qian ceng ta - jin bu huan?)

June 13, 2007

HPLC analysis costs a few hundred dollars, which I'm guessing is

more than you want to pay to satisfy your curiosity. This article

should answer any questions you may have about tetrahydropalmatine

content in Yan Hu Suo and other Chinese herbs:

http://www.herbalgram.org/iherb/herbalgram/articleview.asp?a=913

- Bill

, " G Hudson " <crudo20

wrote:

>

> Along these lines... I know that some reputable companies perform

HPLC

> (high performance liquid chromatography) analysis. I have no idea

how

> this is done, but is it very expensive to do? I would like to

compare

> a similar formula from different manufacturers - if reasonable!

>

> Geoff

>

> , " Alon Marcus "

> <alonmarcus@> wrote:

> >

> > No the herb is jin bu huan, unfortunately chen and chen do not

have

> chemical composition for this herb, I know tetrahydropalmatine is

the

> major analgesic active ingredient in yan hu suo

> >

> > Alon

>

June 13, 2007

Bill

Thanks for the link, i did not realize that this alkaloid is present in other

species. I first go a hold of yan hu suo su in China in 1985 and remember that a

couple of years later it was said to have been outlawed. I wander in having the

d and l in the yan hu suo makes stronger or it was just dose related.

-

bill_schoenbart

Wednesday, June 13, 2007 9:07 AM

Chemical analysis (was: Re: update on qian ceng ta - jin bu

huan?)