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