3-(Chloromethyl)-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-5-carboxylic acid
6-(Bromomethyl)-2-(difluoromethyl)-3-methylpyridine
2-(Bromomethyl)-4-(difluoromethyl)-6-methylpyridine
6-(Chloromethyl)-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-carboxylic acid