3-Chloro-2-fluoro-5-(trifluoromethoxy)pyridine-4-carboxylic acid
6-Bromo-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-acetonitrile
6-Chloro-2-fluoro-3-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Chloro-6-fluoro-4-(trifluoromethoxy)pyridine-3-carboxylic acid