2-Bromo-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-carboxylic acid
2-Cyano-3-hydroxy-4-iodo-6-(trifluoromethoxy)pyridine
5-Chloro-4-cyano-2-iodo-3-(trifluoromethoxy)pyridine
2-Bromo-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-6-carboxylic acid