3-Nitro-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-2-sulfonamide
6-Nitro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-sulfonamide
Ethyl 4-(difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-2-carboxylate
2-Nitro-5-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-sulfonamide