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