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