2-Chloro-5-cyano-3-(difluoromethyl)-4-methylpyridine
3-Bromo-2-(difluoromethyl)-5-(trifluoromethyl)pyridine-6-carboxylic acid
3-Bromo-2-(difluoromethyl)-4-(trifluoromethyl)pyridine-6-carboxylic acid
6-Bromo-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-4-carboxylic acid