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