2-(Difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-4-acetonitrile
2-(Difluoromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-6-acetonitrile
Ethyl 6-(difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-2-acetate
Ethyl 3-hydroxy-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetate