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