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