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