5-Chloro-4-(difluoromethyl)pyridine-2-acetic acid
2-Cyano-3-(difluoromethyl)pyridine-5-acetic acid
4-(Chloromethyl)-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-acetic acid
3-(Chloromethyl)-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-5-carbonyl chloride