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