4-(Difluoromethyl)-6-hydroxy-2-nitro-3-(trifluoromethyl)pyridine
3-(Aminomethyl)-2-(difluoromethyl)-6-hydroxypyridine-5-acetic acid
3-(Difluoromethyl)-5-hydroxy-4-nitro-2-(trifluoromethyl)pyridine
3-(Difluoromethyl)-5-hydroxy-6-methylpyridine-2-carbonyl chloride