Partial parity

ChemAxon 587f88acea

22-06-2004 08:18:56

When inserting a structure I 've got sometime the following message : Warning : Partial parity information is applied





What does it mean ? what are concequences ? how can I catch this warning ?





Thanks

ChemAxon 25dcd765a3

22-06-2004 18:37:43

I suppose you are inserting a SMILES string.


In this case 2D coordinates are generated, and the parity specified in the SMILES string should appear as up/down wedges in the molecule. You get this warning because it was not possible to arrange the wedges to get the same parities specified in the SMILES string.


As a consequence the molecule you have in the viewer has less parity information than in the SMILES string.


Actually you cannot catch this warning.

ChemAxon 25dcd765a3

22-06-2004 19:00:54

Could you write me the problematic SMILES if possible, to examine the problem more deeply.

ChemAxon 587f88acea

24-06-2004 08:12:31

Sorry but I don't try to insert any smile ... it is a molfile and I as I can't catch this warning I can not say which of my 47000 moecules is concerned ...

ChemAxon 25dcd765a3

24-06-2004 11:05:27

To detect the problem I need your help. Where from and where to have you inserted this molfile.


A Molfile usually has the 2D coordinates already, so I have to find out why your program gets into the 2D cleaning process (where this warning is originated from).


Don't you use somewhere in your code molecule cleaning:


Code:



molecule.clean(2,...);


ChemAxon 587f88acea

04-04-2005 13:00:29

Hello,





i have a similar problem. The warning:


Warning: Partial parity information is applied.


appears when applying the pKaPlugin to mol-Files.


An example for an affected file is attached.





sincerely seb

ChemAxon 43e6884a7a

04-04-2005 13:24:50

Seb,


What do you do exactly when you get this message? I cannot reproduce the error.


Anyway, you can neglect the warning, because the problem will not have any influence on the prediction.