Ethyl 2-(difluoromethyl)-5-fluoro-4-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 4-(difluoromethyl)-3-fluoro-5-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 3-fluoro-5-hydroxy-4-(trifluoromethoxy)pyridine-2-acetate
2-Fluoro-6-hydroxy-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine