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