2-(Bromomethyl)-6-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxylic acid
2-(Bromomethyl)-5-(difluoromethyl)-6-(trifluoromethoxy)pyridine-3-carboxylic acid
4-Cyano-2-(difluoromethyl)pyridine-6-acetic acid
2-(Bromomethyl)-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxylic acid