Methyl 3-bromo-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-bromo-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-6-acetate
Methyl 3-bromo-5-(fluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetate
Methyl 4-bromo-2-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-acetate