3-(Bromomethyl)-4-(difluoromethyl)-2-iodopyridine-6-carboxylic acid
3-(Bromomethyl)-2-(difluoromethyl)-6-iodopyridine-5-carboxylic acid
4-(Chloromethyl)-2-(difluoromethyl)-5-iodo-3-(trifluoromethyl)pyridine
4-(Chloromethyl)-2-(difluoromethyl)-3-iodo-5-(trifluoromethyl)pyridine