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