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