3-(Chloromethyl)-2-fluoro-5-nitro-4-(trifluoromethoxy)pyridine
6-(Chloromethyl)-2-fluoro-3-nitro-4-(trifluoromethoxy)pyridine
3-Fluoro-5-(fluoromethyl)-4-iodo-2-(trifluoromethoxy)pyridine
2-(Chloromethyl)-6-fluoro-4-nitro-3-(trifluoromethoxy)pyridine