Methyl 3-(chloromethyl)-4-(difluoromethyl)-2-hydroxypyridine-5-acetate
2-(Difluoromethyl)-4-hydroxy-3-nitropyridine-5-sulfonamide
Ethyl 3-(aminomethyl)-6-(difluoromethyl)-2-hydroxypyridine-5-acetate
2-(Difluoromethyl)-3-hydroxy-4-nitropyridine-5-sulfonamide