2-Bromo-5-(chloromethyl)-3-(difluoromethyl)pyridine-6-carboxylic acid
2-Chloro-4-(chloromethyl)-6-(difluoromethyl)-3-iodopyridine
4-Chloro-3-(difluoromethyl)-6-iodo-2-(trifluoromethyl)pyridine
4-Chloro-3-(difluoromethyl)-2-iodo-6-(trifluoromethyl)pyridine