Methyl 2-(aminomethyl)-3-(difluoromethyl)-5-hydroxypyridine-4-acetate
3-(Difluoromethyl)-4-hydroxy-2-nitropyridine-5-carbonyl chloride
4-(Aminomethyl)-6-(difluoromethyl)-2-hydroxypyridine-3-acetic acid
2-(Difluoromethyl)-3-hydroxy-4-nitropyridine-5-carbonyl chloride