Methyl 3-amino-5-(bromomethyl)-2-(difluoromethyl)pyridine-4-acetate
Methyl 3-amino-5-(bromomethyl)-6-(difluoromethyl)pyridine-2-acetate
2-Amino-4-(bromomethyl)-3-(difluoromethyl)pyridine-5-acetic acid
Methyl 5-amino-4-(bromomethyl)-3-(difluoromethyl)pyridine-2-acetate