3-Bromo-4-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-acetic acid
4-Chloro-3-nitro-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
3-Chloro-2-hydroxy-6-iodo-4-(trifluoromethoxy)pyridine
3-Bromo-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-5-acetic acid