5-Chloro-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-4-carboxylic acid
3-Chloro-4-(difluoromethyl)-5-(trifluoromethyl)pyridine-2-carboxylic acid
3-(Chloromethyl)-4-cyano-5-(difluoromethyl)-2-hydroxypyridine
2-Chloro-4-(difluoromethyl)-5-(trifluoromethyl)pyridine-3-carboxylic acid