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