4-Cyano-2-(difluoromethyl)-5-(trifluoromethyl)pyridine-3-carboxylic acid
3-(Bromomethyl)-4-cyano-5-(difluoromethyl)pyridine-2-carboxylic acid
4-(Difluoromethyl)-3-fluoro-6-hydroxy-2-(trifluoromethyl)pyridine
2-(Bromomethyl)-6-cyano-4-(difluoromethyl)pyridine-3-carboxylic acid