5-Bromo-4-(difluoromethyl)-2-nitropyridine-3-sulfonyl chloride
2-Amino-6-(bromomethyl)-5-(difluoromethyl)-3-nitropyridine
3-Amino-5-(chloromethyl)-4-(difluoromethyl)pyridine-2-carboxylic acid
3-(Difluoromethyl)-5-hydroxy-4-nitropyridine-2-sulfonyl chloride