4-Fluoro-6-nitro-3-(trifluoromethoxy)pyridine-2-sulfonamide
5-Fluoro-3-nitro-4-(trifluoromethoxy)pyridine-2-sulfonamide
4-Hydroxy-6-methyl-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
3-Hydroxy-2-methyl-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine