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