Christian,

have you ever received any answer on this?
This message showed up in my mailbox only today (26-08-08) but seems to
have been sent 19 days ago.

CDK News issue 3/1 had an article on the logP quality assurance that we
did and shows how CDK logP performs vs. various other impls.
http://downloads.sourceforge.net/cdk/cdknews3.1.pdf
The values shown in these plots are certainly not in the range that you
report. The problem could have arisen from either the KNIME impl or some
changes introducing problems in CDK after the article was written

Cheers,

Chris

Christian Grunwald wrote:
> Dear colleagues,
> 
> I was quite happy when I found out that it is possible to use KNIME for
> the calculation of ADME properties such as logP and TPSA. However, when I
> compared the results with reference data (PSA from Sybyl calculations, logP
> from TSAR) there seems to be errors in CDK or KNIME or the CDK
> implementation in KNIME. Especially, logPs are calculated in a range from
> 15 to 45 but should be about 3. There are also sometimes differences of
> greater than 50 % between TPSA and Sybyl PSA data. What are the reasons for
> this?
> 
> Thank you very much in advance
> Christian
> 
> ____________________________
> Dr. Christian Grunwald
> elbion GmbH
> Meissner Str. 191
> 01445 Radebeul
> Germany
> Phone: +49-351-4043 1552
> Fax: +49-351-4043 5552
> [EMAIL PROTECTED]
> www.elbion.com
> _____________________________
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-- 
Dr. Christoph Steinbeck
Head of Chemoinformatics and Metabolism
European Bioinformatics Institute (EBI)
Wellcome Trust Genome Campus
Hinxton, Cambridge CB10 1SD UK
Phone +44 1223 49 2640

What is man but that lofty spirit - that sense of enterprise.
... Kirk, "I, Mudd," stardate 4513.3..


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