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