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