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