Ethyl 4-bromo-2-(chloromethyl)-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 4-bromo-2-(chloromethyl)-3-(trifluoromethoxy)pyridine-5-acetate
Ethyl 4-bromo-5-nitro-3-(trifluoromethoxy)pyridine-2-acetate
Ethyl 4-bromo-3-nitro-5-(trifluoromethoxy)pyridine-2-acetate