Methyl 3-(bromomethyl)-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylate
2-Nitro-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-sulfonamide
2-Nitro-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-sulfonamide
2-Nitro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-sulfonamide