4-Fluoro-3-nitro-2-(trifluoromethoxy)pyridine-5-sulfonamide
2-Fluoro-3-methoxy-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
5-Fluoro-2-(fluoromethyl)-3-methoxy-4-(trifluoromethoxy)pyridine
4-Fluoro-2-nitro-3-(trifluoromethoxy)pyridine-5-sulfonamide