Methyl 2-(chloromethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxylate
4-(Bromomethyl)-3-iodo-6-methyl-2-(trifluoromethoxy)pyridine
Methyl 2-(chloromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-5-carboxylate
2-(Chloromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-5-acetic acid