Hi Ivan, The RDKit supports this through the standard SDF V3000 ENDPTS and ATTACH keywords; see this notebook from Greg for an example:
https://github.com/rdkit/UGM_2020/blob/master/Notebooks/Landrum_WhatsNew.ipynb (search for "Position variation bonds" in the notebook) and the Biovia documentation here for reference: http://help.accelrysonline.com/ulm/onelab/1.0/content/ulm_pdfs/direct/reference/ctfileformats2016.pdf Cheers, p. On Sat, Nov 28, 2020 at 8:16 PM Ivan Hohlov <hohlovi...@gmail.com> wrote: > Hello, > > is it possible to draw an atom with an undefined position in a ring? Like > R-groups in attached picture > > Thanks > _______________________________________________ > Rdkit-discuss mailing list > Rdkit-discuss@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/rdkit-discuss >
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