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