Thanks for the clarification. And sorry, it was a typo I meant version 1.5. I 
assume your explanation still holds true for that as well?

Sebastian

From: John Mayfield <john.wilkinson...@gmail.com>
Sent: Tuesday, July 30, 2019 10:27 AM
To: Wehner, Sebastian <sebastian.weh...@bruker.com>
Cc: cdk-user@lists.sourceforge.net
Subject: Re: [Cdk-user] Stereochemistry resolution

No, it wasn't possible. They used different data structures so you could go 
to/from SMILES and to/from 2D Mol/CML but not from Mol to Smi or Smi to Mol. 
Please don't use 1.1.5 (I presume as there is no 1.15 version) it's 10+ years 
old.

John

On Tue, 30 Jul 2019 at 08:49, Wehner, Sebastian via Cdk-user 
<cdk-user@lists.sourceforge.net<mailto:cdk-user@lists.sourceforge.net>> wrote:
Hello,

I am trying to produce a smiles string from a molfile, via AtomContainer as an 
intermediate. Is it possible to properly resolve stereochemistry in CDK version 
1.15?

In some detail:
I tried some approaches with known stereo-isotopes for which I both had the 
molfile (SDF). The molfile was parsed via MDLV2000Reader to an AtomContainer 
which in turn was passed to the SmilesGenerator for parsing to smiles. Sadly 
both molfiles resulted in the same smiles string.
I read the paper for CDK v2.0 
(https://jcheminf.biomedcentral.com/articles/10.1186/s13321-017-0220-4) which 
states that in this version the stereochemistry is standardized. But it does 
not convey whether it wasn’t possible before. So is there a way to resolve 
stereochemistry in v1.15? And if so, can anyone provide some code examples?

Hope someone can shed some light on this,
Best Regards
Sebastian

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