3-(Bromomethyl)-2-fluoro-4-nitro-6-(trifluoromethoxy)pyridine
3-Fluoro-5-hydroxy-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-(Bromomethyl)-6-fluoro-3-iodo-5-(trifluoromethoxy)pyridine
5-Fluoro-4-hydroxy-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride