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