canonicalSmiles is wrong

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takayuk...@schrodinger.com

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Jan 7, 2018, 3:48:27 PM1/7/18
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Hi, 
thank you for the great software.

I found canonicalSmiles() gave me wrong SMILES.
I ran the function for two different look but the same two MOL data.
It gave me different (@ and @@) smiles. Thank you.

Taka
twoctabs.txt

ord...@omegachem.com

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Jan 19, 2018, 8:22:37 AM1/19/18
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I observed problems with SMILES / Can SMILES with Ketcher as well.On my side, I ususally generate Mol File from Ketcher and generate SMILES / Can SMILES with OpenBabel

David 

Yuriy Puzanov

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Mar 1, 2018, 8:43:36 AM3/1/18
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Hello, Taka!

    Thank you very much for using Indigo!

As about you question I see that molfiles in your example are slightly different:
the first has no chiral flag (0) while in the second this flag is set (1), so the first structure is
interpreted as racemic mixture and the second is interpreted as corresponding enantiomer.
And this is the reason of different SMILES in these cases.

Best Regards!
Yuriy
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