2-Fluoro-5-hydroxy-6-(trifluoromethoxy)pyridine-3-acetonitrile
3-(Difluoromethyl)-2-fluoro-5-(trifluoromethoxy)pyridine-4-carboxylic acid
2-(Difluoromethyl)-5-fluoro-6-(trifluoromethoxy)pyridine-3-carboxylic acid
2-(Difluoromethyl)-4-fluoro-5-(trifluoromethoxy)pyridine-3-carboxylic acid