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
2-Cyano-3-hydroxy-6-iodo-4-(trifluoromethoxy)pyridine