4-Mercapto-5-(trifluoromethyl)nicotinonitrile
5-Mercapto-2-(trifluoromethyl)isonicotinonitrile
3-Mercapto-2-(trifluoromethyl)isonicotinonitrile
2-Mercapto-4-(trifluoromethyl)nicotinonitrile
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