Ethyl 3-(difluoromethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-2-acetate
Ethyl 3-(difluoromethyl)-4-hydroxy-6-(trifluoromethoxy)pyridine-2-acetate
Ethyl 3-(difluoromethyl)-2-hydroxy-6-(trifluoromethoxy)pyridine-4-acetate
3-Hydroxy-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-4-carboxaldehyde