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