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