Ethyl 3-(difluoromethyl)-4-fluoro-2-(trifluoromethyl)pyridine-6-carboxylate
Ethyl 2-(difluoromethyl)-3-fluoro-4-(trifluoromethyl)pyridine-6-carboxylate
4-(Difluoromethyl)-2-hydroxy-3-iodopyridine-6-carboxylic acid
2-(Difluoromethyl)-4-hydroxy-6-iodopyridine-3-carboxylic acid