3-Chloro-2-(difluoromethyl)-4-hydroxypyridine-5-carboxaldehyde
4-Chloro-6-(difluoromethyl)-2-hydroxypyridine-3-carboxylic acid
4-Cyano-6-(difluoromethyl)-3-fluoro-2-(trifluoromethyl)pyridine
3-Cyano-5-(difluoromethyl)-2-fluoro-4-(trifluoromethyl)pyridine