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