5-(Difluoromethyl)-2-hydroxy-4-nitropyridine-3-carboxamide
3-(Difluoromethyl)-6-hydroxy-2-(trifluoromethyl)pyridine-5-carboxylic acid
2-(Aminomethyl)-5-(difluoromethyl)-6-hydroxypyridine-3-acetonitrile
3-(Difluoromethyl)-4-hydroxy-6-(trifluoromethyl)pyridine-2-carboxylic acid