3-Bromo-6-(chloromethyl)-4-(difluoromethyl)pyridine-2-acetic acid
3-Bromo-4-(difluoromethyl)-5-nitropyridine-2-sulfonyl chloride
3-Bromo-4-(difluoromethyl)-2-nitropyridine-5-sulfonyl chloride
5-Bromo-2-(chloromethyl)-3-(difluoromethyl)pyridine-6-acetic acid