Ethyl 4-amino-3-(bromomethyl)-2-(difluoromethyl)pyridine-6-carboxylate
Ethyl 3-amino-4-(bromomethyl)-2-(difluoromethyl)pyridine-6-carboxylate
2-Amino-5-(difluoromethyl)-4-nitro-3-(trifluoromethyl)pyridine
5-Amino-2-(chloromethyl)-4-(difluoromethyl)-3-nitropyridine