6-Chloro-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
2-Chloro-5-nitro-3-(trifluoromethoxy)pyridine-6-sulfonamide
Ethyl 2-cyano-3-nitro-5-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 4-cyano-3-nitro-5-(trifluoromethoxy)pyridine-2-carboxylate