Ethyl 3-(difluoromethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine-5-acetate
2-(Difluoromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-3-carboxylic acid
Ethyl 4-(difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-2-acetate
Ethyl 4-(difluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-6-acetate