3-Chloro-5-(difluoromethyl)-6-(trifluoromethyl)pyridine-2-carboxylic acid
6-(Bromomethyl)-2-cyano-3-(difluoromethyl)-4-iodopyridine
2-Chloro-6-(difluoromethyl)-3-(trifluoromethyl)pyridine-5-carboxylic acid
4-Chloro-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-6-acetic acid