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