Methyl 5-(bromomethyl)-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-6-acetate
Methyl 2-(bromomethyl)-4-(difluoromethyl)-3-(trifluoromethyl)pyridine-5-acetate
Methyl 4-(bromomethyl)-5-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-acetate
Methyl 2-(bromomethyl)-3-(difluoromethyl)-6-(trifluoromethyl)pyridine-4-acetate