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