Methyl 3-(difluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 6-hydroxy-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-carboxylate
2-Hydroxy-4-nitro-6-(trifluoromethoxy)pyridine-3-acetic acid
Methyl 5-(difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate