Ethyl 4-(difluoromethyl)-3-hydroxy-6-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 3-(difluoromethyl)-4-hydroxy-6-(trifluoromethyl)pyridine-2-carboxylate
Methyl 3-(difluoromethyl)-2-hydroxy-4-(trifluoromethyl)pyridine-6-acetate
Ethyl 4-(bromomethyl)-2-(difluoromethyl)-3-hydroxypyridine-5-carboxylate