Methyl 2-amino-5-(bromomethyl)-4-(difluoromethyl)pyridine-3-carboxylate
Methyl 2-amino-3-(bromomethyl)-5-(difluoromethyl)pyridine-4-carboxylate
4-Amino-6-(bromomethyl)-3-(difluoromethyl)-2-nitropyridine
3-Amino-2-(bromomethyl)-5-(difluoromethyl)-6-nitropyridine