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