2-(Difluoromethyl)-5-hydroxy-3-nitropyridine-6-acetic acid
Methyl 5-(chloromethyl)-3-(difluoromethyl)-2-hydroxypyridine-4-carboxylate
2-(Difluoromethyl)-3-hydroxy-6-nitropyridine-4-acetic acid
Methyl 3-(chloromethyl)-2-(difluoromethyl)-5-hydroxypyridine-4-carboxylate