6-Bromo-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Bromo-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylic acid
6-Bromo-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylic acid
2-Cyano-4-hydroxy-3-iodo-6-(trifluoromethoxy)pyridine