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