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