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