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