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