Ethyl 3-(aminomethyl)-2-(difluoromethyl)-4-hydroxypyridine-6-acetate
5-(Difluoromethyl)-3-hydroxy-4-nitropyridine-2-sulfonyl chloride
4-(Chloromethyl)-3-(difluoromethyl)-5-hydroxy-2-(trifluoromethyl)pyridine
6-(Difluoromethyl)-4-hydroxy-2-(trifluoromethyl)pyridine-3-carboxaldehyde