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