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