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
3-Amino-2-(chloromethyl)-5-(difluoromethyl)-6-(trifluoromethyl)pyridine