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