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