2-(Bromomethyl)-3-(difluoromethyl)-4-iodopyridine-5-acetic acid
4-(Chloromethyl)-2-(difluoromethyl)-6-iodopyridine-3-acetic acid
Methyl 4-(bromomethyl)-6-(difluoromethyl)-3-iodopyridine-2-acetate
Ethyl 6-(chloromethyl)-3-(difluoromethyl)-4-iodopyridine-2-acetate