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