Methyl 4-bromo-2-(bromomethyl)-5-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 4-bromo-2-(bromomethyl)-3-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 3-bromo-5-(bromomethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
5-Bromo-3-(bromomethyl)-4-(trifluoromethoxy)pyridine-2-acetic acid