4-(Bromomethyl)-2-cyano-3-(difluoromethyl)pyridine-6-acetic acid
3-Cyano-5-(difluoromethyl)-2-nitropyridine-4-sulfonyl chloride
3-(Bromomethyl)-2-cyano-6-(difluoromethyl)pyridine-4-acetic acid
3-Cyano-2-(difluoromethyl)-5-nitropyridine-6-sulfonyl chloride