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