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