Methyl 6-(difluoromethyl)-3-fluoro-4-iodopyridine-2-carboxylate
Methyl 6-(difluoromethyl)-4-fluoro-3-iodopyridine-2-carboxylate
Methyl 2-(difluoromethyl)-3-fluoro-5-iodopyridine-6-carboxylate
4-(Difluoromethyl)-6-fluoro-3-iodopyridine-2-carboxylic acid