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