4-Methoxy-2-nitro-5-(trifluoromethoxy)pyridine-3-sulfonamide
5-Methoxy-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
3-Methoxy-5-nitro-4-(trifluoromethoxy)pyridine-2-sulfonamide
Methyl 2-(fluoromethyl)-5-iodo-3-(trifluoromethoxy)pyridine-6-carboxylate