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