3-Amino-2-cyano-5-(difluoromethyl)-6-(trifluoromethyl)pyridine
3-Amino-2-cyano-4-(difluoromethyl)-5-(trifluoromethyl)pyridine
6-Amino-2-cyano-4-(difluoromethyl)-3-(trifluoromethyl)pyridine
6-Amino-4-cyano-3-(difluoromethyl)-2-(trifluoromethyl)pyridine