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