4-Bromo-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-6-acetic acid
3-Chloro-4-cyano-2-(difluoromethyl)-5-(trifluoromethyl)pyridine
4-Bromo-6-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-acetic acid
3-Chloro-2-cyano-6-(difluoromethyl)-4-(trifluoromethyl)pyridine