6-Hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-2-sulfonamide
4-Iodo-3-methoxy-2-nitro-5-(trifluoromethoxy)pyridine
2-Hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-6-sulfonamide
Ethyl 2-(difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-6-carboxylate