Methyl 2-(bromomethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 6-(bromomethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 2-(bromomethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 2-(bromomethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-6-carboxylate