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