Hi Macjek and Mike,
If I understand your question correctly, you can specify InChI option
parameters when calculating InChIs. Here is an example:
m = Chem.MolFromSmiles('CCC1=CN=C(NC1=O)NC')
Chem.MolToInchi(m)
'InChI=1S/C7H11N3O/c1-3-5-4-9-7(8-2)10-6(5)11/h4H,3H2,1-2H3,(H2,8,9,10,11)'
Now, try with one of the non-standard options such as FixedH:
Chem.MolToInchi(m,'/FixedH')
'InChI=1/C7H11N3O/c1-3-5-4-9-7(8-2)10-6(5)11/h4H,3H2,1-2H3,(H2,8,9,10,11)/f/h8,10H'
To answer the question of what happens when the InChI calculation fails, I get
an empty string.
m =
Chem.MolFromSmiles('[C@H]1([C@H](C1C2[C@@H]([C@@H]2C(=O)O)C(=O)O)C(=O)O)C(=O)O')
Chem.MolToInchi(m)
' '
There is also an InChI option that can warn on empty structures, and calculate
an empty InChI, which I am assuming is supposed to be ‘InChI=1S//’, however,
when trying this option I get the same result as above.
Chem.MolToInchi(m,'/WarnOnEmptyStructure')
' '
I hope that helps.
Vin
From: Maciek Wójcikowski <[email protected]>
Sent: Wednesday, October 9, 2019 3:41 AM
To: Greg Landrum <[email protected]>
Cc: RDKit Discuss <[email protected]>
Subject: Re: [Rdkit-discuss] Inchi which flavour??
Mike,
On top of what Greg said what might be particularly useful is an options
parameter where you can pass some non default params to InChI call.
śr., 9 paź 2019, 07:22 użytkownik Greg Landrum
<[email protected]<mailto:[email protected]>> napisał:
Hi Mike,
The InChI API itself is not exposed. The contents of the module are in the
documentation along with some explanations of how to call it:
http://rdkit.org/docs/source/rdkit.Chem.rdinchi.html
If something is missing there, please let us know.
-greg
On Tue, Oct 8, 2019 at 5:20 PM
<[email protected]<mailto:[email protected]>> wrote:
Dear RdKit users,
I was reading the inchi module docs and I couldn't find methods to call the
InChI API. Are these exposed in RDKit?
It says the default is the standard Inchi. What happens when this conversion
fails?
Thanks,
Mike
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