Ethyl 4-(bromomethyl)-2-fluoro-3-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 4-fluoro-5-methyl-3-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 3-(bromomethyl)-5-fluoro-6-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 4-fluoro-3-methyl-2-(trifluoromethoxy)pyridine-5-carboxylate