Methyl 2-cyano-6-(difluoromethyl)-4-(trifluoromethyl)pyridine-3-carboxylate
3-Cyano-6-(difluoromethyl)-2-(trifluoromethyl)pyridine-4-carboxylic acid
4-Cyano-3-(difluoromethyl)-5-(trifluoromethyl)pyridine-2-carboxylic acid
2-(Difluoromethyl)-5-fluoro-3-hydroxypyridine-4-carboxylic acid