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